{"id":9690,"date":"2026-11-09T09:00:00","date_gmt":"2026-11-09T17:00:00","guid":{"rendered":"https:\/\/frenchdistrict.com\/caraibes\/articles\/weekend-visite-parc-naturel-yellowstone-wyoming\/"},"modified":"2026-11-09T14:49:43","modified_gmt":"2026-11-09T19:49:43","slug":"weekend-visite-parc-naturel-yellowstone-wyoming","status":"publish","type":"post","link":"https:\/\/frenchdistrict.com\/caraibes\/articles\/weekend-visite-parc-naturel-yellowstone-wyoming\/","title":{"rendered":"Un week-end dans le parc de Yellowstone"},"content":{"rendered":"<p style=\"margin: 0 0 6px;\"><strong>Au sommaire<\/strong><\/p>\n<ul style=\"columns: 2 220px; column-gap: 32px; margin: 0 0 18px; padding-left: 20px;\">\n<li style=\"break-inside: avoid; margin: 0 0 4px;\"><a href=\"#chiffres\">Le parc en chiffres<\/a><\/li>\n<li style=\"break-inside: avoid; margin: 0 0 4px;\"><a href=\"#avant-de-partir\">Avant de partir : entr\u00e9e, routes, r\u00e9servations<\/a><\/li>\n<li style=\"break-inside: avoid; margin: 0 0 4px;\"><a href=\"#programme\">Notre programme du week-end<\/a><\/li>\n<li style=\"break-inside: avoid; margin: 0 0 4px;\"><a href=\"#beartooth\">Arriver par la Beartooth Highway<\/a><\/li>\n<li style=\"break-inside: avoid; margin: 0 0 4px;\"><a href=\"#geysers\">Old Faithful et les geysers<\/a><\/li>\n<li style=\"break-inside: avoid; margin: 0 0 4px;\"><a href=\"#grand-prismatic\">Grand Prismatic et Fountain Paint Pot<\/a><\/li>\n<li style=\"break-inside: avoid; margin: 0 0 4px;\"><a href=\"#west-thumb\">West Thumb, au bord du lac<\/a><\/li>\n<li style=\"break-inside: avoid; margin: 0 0 4px;\"><a href=\"#canyon\">Le Grand Canyon et Tower Fall<\/a><\/li>\n<li style=\"break-inside: avoid; margin: 0 0 4px;\"><a href=\"#faune\">Les animaux<\/a><\/li>\n<li style=\"break-inside: avoid; margin: 0 0 4px;\"><a href=\"#que-faire\">Que faire \u00e0 Yellowstone ?<\/a><\/li>\n<li style=\"break-inside: avoid; margin: 0 0 4px;\"><a href=\"#insolite\">Faits insolites<\/a><\/li>\n<li style=\"break-inside: avoid; margin: 0 0 4px;\"><a href=\"#quand-partir\">Quand partir ?<\/a><\/li>\n<\/ul>\n<p style=\"background: #f7f4ee; border: 1px solid #e2ddd3; border-left: 4px solid #A41B1F; padding: 12px 16px; font-size: 15px; line-height: 1.7;\"><strong style=\"font-size: 17px;\">Yellowstone en bref<\/strong><br \/><strong>Dur\u00e9e<\/strong>&nbsp;: un week-end pour les geysers du sud-ouest et le Grand Canyon, trois ou quatre jours pour faire tout le tour<br \/><strong>Quand<\/strong>&nbsp;: de juin \u00e0 septembre, toutes les routes sont ouvertes&nbsp;; de d\u00e9but novembre \u00e0 mi-d\u00e9cembre et de mi-mars \u00e0 mi-avril, le parc est presque enti\u00e8rement ferm\u00e9<br \/><strong>Entr\u00e9e<\/strong>&nbsp;: 35&nbsp;$ par v\u00e9hicule pour 7 jours, plus 100&nbsp;$ par visiteur non r\u00e9sident des \u00c9tats-Unis de 16 ans et plus<br \/><strong>T\u00e9l\u00e9phone<\/strong>&nbsp;: peu de r\u00e9seau en dehors des villages&nbsp;; enregistrez la carte du parc pour l&#8217;utiliser sans connexion (<a href=\"https:\/\/support.google.com\/maps\/answer\/6291838?hl=fr\" target=\"_blank\" rel=\"noopener\">mode d&#8217;emploi Google Maps<\/a>)<br \/><strong>Dormir<\/strong>&nbsp;: neuf h\u00f4tels et onze campings dans le parc, \u00e0 r\u00e9server des mois \u00e0 l&#8217;avance&nbsp;; sinon West Yellowstone, Gardiner ou Cody<br \/><strong>S\u00e9curit\u00e9<\/strong>&nbsp;: restez sur les passerelles pr\u00e8s des sources chaudes, et \u00e0 91&nbsp;m des ours et des loups, 23&nbsp;m des bisons et des wapitis<\/p>\n<p>Tous les sites de notre week-end, de la Beartooth Highway \u00e0 Old Faithful, sur une seule carte :<br \/>\n<iframe title=\"Un week-end dans le parc de Yellowstone\" src=\"https:\/\/www.google.com\/maps\/d\/embed?mid=1xHXAU8uB7cQrQ8l8b6NUZJZVR_Eh2q0&amp;ehbc=2E312F\" width=\"750\" height=\"550\" style=\"border:0; max-width:100%;\" loading=\"lazy\" allowfullscreen><\/iframe><\/p>\n<h2 id=\"chiffres\" style=\"scroll-margin-top: 80px;\">Le parc de Yellowstone en quelques chiffres<\/h2>\n<ul>\n<li>Cr\u00e9\u00e9 le 1<sup>er<\/sup> mars 1872, le <strong>parc de Yellowstone<\/strong> est le premier parc national au monde.<\/li>\n<li>Il s&#8217;\u00e9tale sur environ <strong>899&nbsp;000 hectares<\/strong> (8&nbsp;991&nbsp;km\u00b2)&nbsp;: il est un peu plus grand que la Corse.<\/li>\n<li>Environ <strong>4,8 millions de curieux<\/strong> le visitent chaque ann\u00e9e, et c&#8217;est l&#8217;un des cinq <i class=\"fa fa-link\" aria-hidden=\"true\"><\/i> <a href=\"https:\/\/frenchdistrict.com\/californie-nord\/articles\/plus-beaux-parcs-nationaux-etats-unis\/\">parcs nationaux<\/a> les plus visit\u00e9s des \u00c9tats-Unis. En 2025, le parc a compt\u00e9 4&nbsp;762&nbsp;988 visites, la deuxi\u00e8me meilleure ann\u00e9e de son histoire apr\u00e8s 2021.<\/li>\n<li>3&nbsp;: c&#8217;est le nombre d&#8217;\u00c9tats sur lesquels le <strong>parc de Yellowstone<\/strong> se trouve, m\u00eame si la (tr\u00e8s) grande majorit\u00e9 se situe dans le Wyoming (96&nbsp;%), le reste au Montana (3&nbsp;%) et en Idaho (1&nbsp;%).<\/li>\n<li>Il y a environ <strong>636 kilom\u00e8tres de routes goudronn\u00e9es<\/strong> qui sillonnent le parc, dont la Grand Loop, une boucle en forme de huit d&#8217;environ 230&nbsp;km.<\/li>\n<li>Environ 750 agents du <em>National Park Service<\/em> y travaillent l&#8217;\u00e9t\u00e9, rangers, agents d&#8217;entretien, chercheurs et pompiers compris.<\/li>\n<li>Le parc a connu <strong>trois \u00e9ruptions g\u00e9antes<\/strong>, il y a 2,1 millions d&#8217;ann\u00e9es, 1,3 million d&#8217;ann\u00e9es et 631&nbsp;000 ans. La premi\u00e8re et la derni\u00e8re ont atteint 8 sur l&#8217;\u00e9chelle d&#8217;explosivit\u00e9 volcanique, le maximum&nbsp;; celle du milieu, plus petite, 7.<\/li>\n<\/ul>\n<div id=\"attachment_68971\" style=\"width: 820px\" class=\"wp-caption aligncenter\"><a href=\"https:\/\/frenchdistrict.com\/caraibes\/wp-content\/uploads\/sites\/16\/2026\/11\/yellowstone-point-chaud.jpg\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-68971\" class=\"wp-image-68971 size-large\" src=\"https:\/\/frenchdistrict.com\/caraibes\/wp-content\/uploads\/sites\/16\/2026\/11\/yellowstone-point-chaud-1024x694.jpg\" alt=\"Carte de l&#039;ouest des \u00c9tats-Unis : une tra\u00een\u00e9e de caldeiras num\u00e9rot\u00e9es de 16 \u00e0 0,6 millions d&#039;ann\u00e9es traverse l&#039;Idaho jusqu&#039;au parc de Yellowstone, une fl\u00e8che montre le mouvement de la plaque nord-am\u00e9ricaine vers le sud-ouest\" width=\"810\" height=\"549\" srcset=\"https:\/\/frenchdistrict.com\/caraibes\/wp-content\/uploads\/sites\/16\/2026\/11\/yellowstone-point-chaud-1024x694.jpg 1024w, https:\/\/frenchdistrict.com\/caraibes\/wp-content\/uploads\/sites\/16\/2026\/11\/yellowstone-point-chaud-300x203.jpg 300w, https:\/\/frenchdistrict.com\/caraibes\/wp-content\/uploads\/sites\/16\/2026\/11\/yellowstone-point-chaud-768x521.jpg 768w, https:\/\/frenchdistrict.com\/caraibes\/wp-content\/uploads\/sites\/16\/2026\/11\/yellowstone-point-chaud-1536x1042.jpg 1536w, https:\/\/frenchdistrict.com\/caraibes\/wp-content\/uploads\/sites\/16\/2026\/11\/yellowstone-point-chaud-810x549.jpg 810w, https:\/\/frenchdistrict.com\/caraibes\/wp-content\/uploads\/sites\/16\/2026\/11\/yellowstone-point-chaud-1140x773.jpg 1140w, https:\/\/frenchdistrict.com\/caraibes\/wp-content\/uploads\/sites\/16\/2026\/11\/yellowstone-point-chaud.jpg 1600w\" sizes=\"auto, (max-width: 810px) 100vw, 810px\" \/><\/a><p id=\"caption-attachment-68971\" class=\"wp-caption-text\">La plaque nord-am\u00e9ricaine glisse vers le sud-ouest au-dessus du point chaud de Yellowstone : les chiffres donnent l&#8217;\u00e2ge des caldeiras, en millions d&#8217;ann\u00e9es, le long de la plaine de la Snake River. <span style=\"font-size: 12px; font-style: italic;\">Cr\u00e9dit photo : <a style=\"color: #3d5185; text-decoration: none;\" href=\"https:\/\/www.nps.gov\/yell\/learn\/nature\/volcano.htm\" target=\"_blank\" rel=\"noopener\">National Park Service, traduction French District<\/a> (domaine public)<\/span><\/p><\/div>\n<h2 id=\"avant-de-partir\" style=\"scroll-margin-top: 80px;\">Avant de partir : entr\u00e9e, routes et r\u00e9servations<\/h2>\n<h3>L&#8217;entr\u00e9e du parc<\/h3>\n<p>Le passage co\u00fbte 35&nbsp;$ par v\u00e9hicule (30&nbsp;$ pour une moto, 20&nbsp;$ par personne \u00e0 pied ou \u00e0 v\u00e9lo) et reste valable sept jours. Grand Teton, juste au sud, fait payer sa propre entr\u00e9e. Il n&#8217;y a pas de r\u00e9servation de v\u00e9hicule&nbsp;: le droit d&#8217;entr\u00e9e suffit.<\/p>\n<p>Depuis 2026, les visiteurs non r\u00e9sidents des \u00c9tats-Unis de 16 ans et plus paient en plus 100&nbsp;$ par personne dans onze parcs, dont Yellowstone, Grand Teton, Glacier et Yosemite. Le pass annuel America the Beautiful, qui ouvre tous les parcs nationaux, co\u00fbte 80&nbsp;$ pour un r\u00e9sident et 250&nbsp;$ pour un non-r\u00e9sident&nbsp;; il dispense de la majoration. Pour prouver sa r\u00e9sidence, le NPS accepte un permis de conduire ou une carte d&#8217;identit\u00e9 d&#8217;un \u00c9tat am\u00e9ricain&nbsp;: un Fran\u00e7ais install\u00e9 aux \u00c9tats-Unis qui en a un devrait donc payer le tarif r\u00e9sident, m\u00eame si le NPS ne le dit pas en toutes lettres pour les titulaires de visa.<\/p>\n<i class=\"fa fa-link\" aria-hidden=\"true\"><\/i> <a href=\"https:\/\/www.nps.gov\/yell\/planyourvisit\/fees.htm\" target=\"_blank\" rel=\"noopener noreferrer\">NPS.gov\/yell\/fees<\/a><\/p>\n<h3>Les routes et les saisons<\/h3>\n<p>La seule route ouverte toute l&#8217;ann\u00e9e aux voitures relie l&#8217;entr\u00e9e nord (Gardiner) \u00e0 Cooke City, par Mammoth et la vall\u00e9e de Lamar. Les autres ferment d\u00e9but novembre&nbsp;; du 15 d\u00e9cembre \u00e0 la mi-mars, on ne circule plus qu&#8217;en motoneige ou en autoneige (<em>snowcoach<\/em>) guid\u00e9es. Au printemps 2027, les routes rouvriront par \u00e9tapes&nbsp;: le 16 avril de l&#8217;entr\u00e9e ouest \u00e0 Old Faithful et \u00e0 Canyon, le 7 mai pour l&#8217;entr\u00e9e est, le 14 mai pour l&#8217;entr\u00e9e sud et West Thumb, le 28 mai pour le col de Dunraven et la Beartooth Highway.<\/p>\n<p>L&#8217;entr\u00e9e nord passe toujours par une route provisoire, ouverte apr\u00e8s la crue historique de juin 2022 qui avait emport\u00e9 plusieurs tron\u00e7ons. En 2027, des travaux de gravillonnage sont pr\u00e9vus dans tout le parc, avec jusqu&#8217;\u00e0 30 minutes d&#8217;attente.<\/p>\n<i class=\"fa fa-link\" aria-hidden=\"true\"><\/i> <a href=\"https:\/\/www.nps.gov\/yell\/planyourvisit\/parkroads.htm\" target=\"_blank\" rel=\"noopener noreferrer\">NPS.gov\/yell\/parkroads<\/a><\/p>\n<h3>Dormir dans le parc<\/h3>\n<p>Les neuf h\u00f4tels et lodges du parc (Old Faithful Inn, Lake Yellowstone Hotel, Canyon Lodge\u2026) sont tous g\u00e9r\u00e9s par Yellowstone National Park Lodges et se r\u00e9servent tr\u00e8s longtemps \u00e0 l&#8217;avance. \u00c0 partir de l&#8217;\u00e9t\u00e9 2027, les onze campings passent tous par Recreation.gov, avec des r\u00e9servations ouvertes environ six mois \u00e0 l&#8217;avance&nbsp;; dormir dans sa voiture hors d&#8217;un camping est interdit. \u00c0 l&#8217;ext\u00e9rieur, des villes comme West Yellowstone, Gardiner ou Cody offrent de nombreuses options (motels, B&amp;B, locations).<\/p>\n<h3>Biscuit Basin, ferm\u00e9<\/h3>\n<p>Le 23 juillet 2024, une explosion hydrothermale a projet\u00e9 des rochers et de la boue sous Black Diamond Pool, \u00e0 Biscuit Basin, au nord d&#8217;Old Faithful. Le parking, les passerelles et la rivi\u00e8re y restent ferm\u00e9s jusqu&#8217;\u00e0 nouvel ordre&nbsp;: c&#8217;est un rappel que le sol des bassins de geysers est fragile et br\u00fblant. Restez toujours sur les passerelles.<\/p>\n<h2 id=\"programme\" style=\"scroll-margin-top: 80px;\">Notre programme pour un week-end<\/h2>\n<p>En deux jours, on ne voit pas tout Yellowstone&nbsp;: on choisit. Voici comment encha\u00eener les sites d\u00e9crits plus bas, de juin \u00e0 septembre.<\/p>\n<ul>\n<li><strong>Samedi, les geysers<\/strong>&nbsp;: Old Faithful \u00e0 l&#8217;ouverture, l&#8217;Upper Geyser Basin jusqu&#8217;\u00e0 Morning Glory Pool, Grand Prismatic Spring vu d&#8217;en haut depuis le sentier de Fairy Falls, Fountain Paint Pot, puis Firehole Canyon Drive en remontant vers Madison.<\/li>\n<li><strong>Dimanche, le canyon et les animaux<\/strong>&nbsp;: la vall\u00e9e de Hayden au lever du jour pour les bisons, le Grand Canyon of the Yellowstone et Artist Point, puis Tower Fall et la vall\u00e9e de Lamar en fin de journ\u00e9e, quand les animaux sortent.<\/li>\n<li><strong>Avec un jour de plus<\/strong>&nbsp;: West Thumb au bord du lac, Mammoth Hot Springs au nord, ou la Beartooth Highway pour arriver ou repartir.<\/li>\n<\/ul>\n<h2 id=\"beartooth\" style=\"scroll-margin-top: 80px;\">Arriver par la Beartooth Highway<\/h2>\n<p>Si vous venez de l&#8217;est ou du Montana, entrez par le nord-est&nbsp;: la <strong>Beartooth Highway<\/strong> (US 212) relie Red Lodge, au Montana, \u00e0 l&#8217;entr\u00e9e nord-est du parc en environ 110&nbsp;km. Elle monte jusqu&#8217;au col de Beartooth, \u00e0 3&nbsp;337&nbsp;m, \u00e0 travers la toundra, les n\u00e9v\u00e9s et des dizaines de lacs d&#8217;altitude. Elle n&#8217;est ouverte qu&#8217;en \u00e9t\u00e9&nbsp;: en 2027, du 28 mai au 11 octobre, sauf fermeture par mauvais temps. Elle d\u00e9bouche sur Cooke City, puis sur la vall\u00e9e de Lamar.<br \/>\n<div id=\"attachment_68961\" style=\"width: 820px\" class=\"wp-caption aligncenter\"><a href=\"https:\/\/frenchdistrict.com\/caraibes\/wp-content\/uploads\/sites\/16\/2026\/11\/yellowstone-beartooth-highway-lac.jpg\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-68961\" class=\"wp-image-68961 size-large\" src=\"https:\/\/frenchdistrict.com\/caraibes\/wp-content\/uploads\/sites\/16\/2026\/11\/yellowstone-beartooth-highway-lac-1024x576.jpg\" alt=\"Un lac bleu sombre au creux d&#039;un plateau d&#039;altitude, des sommets enneig\u00e9s \u00e0 l&#039;horizon\" width=\"810\" height=\"456\" srcset=\"https:\/\/frenchdistrict.com\/caraibes\/wp-content\/uploads\/sites\/16\/2026\/11\/yellowstone-beartooth-highway-lac-1024x576.jpg 1024w, https:\/\/frenchdistrict.com\/caraibes\/wp-content\/uploads\/sites\/16\/2026\/11\/yellowstone-beartooth-highway-lac-300x169.jpg 300w, https:\/\/frenchdistrict.com\/caraibes\/wp-content\/uploads\/sites\/16\/2026\/11\/yellowstone-beartooth-highway-lac-768x432.jpg 768w, https:\/\/frenchdistrict.com\/caraibes\/wp-content\/uploads\/sites\/16\/2026\/11\/yellowstone-beartooth-highway-lac-1536x864.jpg 1536w, https:\/\/frenchdistrict.com\/caraibes\/wp-content\/uploads\/sites\/16\/2026\/11\/yellowstone-beartooth-highway-lac-810x456.jpg 810w, https:\/\/frenchdistrict.com\/caraibes\/wp-content\/uploads\/sites\/16\/2026\/11\/yellowstone-beartooth-highway-lac-1140x641.jpg 1140w, https:\/\/frenchdistrict.com\/caraibes\/wp-content\/uploads\/sites\/16\/2026\/11\/yellowstone-beartooth-highway-lac.jpg 2000w\" sizes=\"auto, (max-width: 810px) 100vw, 810px\" \/><\/a><p id=\"caption-attachment-68961\" class=\"wp-caption-text\">Un des lacs d&#8217;altitude de la Beartooth Highway, c\u00f4t\u00e9 Wyoming. <span style=\"font-size: 12px; font-style: italic;\">Cr\u00e9dit photo : Ben B. \/ French District<\/span><\/p><\/div>\n<div id=\"attachment_68960\" style=\"width: 820px\" class=\"wp-caption aligncenter\"><a href=\"https:\/\/frenchdistrict.com\/caraibes\/wp-content\/uploads\/sites\/16\/2026\/11\/yellowstone-beartooth-pika.jpg\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-68960\" class=\"wp-image-68960 size-large\" src=\"https:\/\/frenchdistrict.com\/caraibes\/wp-content\/uploads\/sites\/16\/2026\/11\/yellowstone-beartooth-pika-1024x682.jpg\" alt=\"Un petit pika gris-brun aux oreilles rondes, assis dans l&#039;herbe rase de la toundra\" width=\"810\" height=\"539\" srcset=\"https:\/\/frenchdistrict.com\/caraibes\/wp-content\/uploads\/sites\/16\/2026\/11\/yellowstone-beartooth-pika-1024x682.jpg 1024w, https:\/\/frenchdistrict.com\/caraibes\/wp-content\/uploads\/sites\/16\/2026\/11\/yellowstone-beartooth-pika-300x200.jpg 300w, https:\/\/frenchdistrict.com\/caraibes\/wp-content\/uploads\/sites\/16\/2026\/11\/yellowstone-beartooth-pika-768x512.jpg 768w, https:\/\/frenchdistrict.com\/caraibes\/wp-content\/uploads\/sites\/16\/2026\/11\/yellowstone-beartooth-pika-1536x1024.jpg 1536w, https:\/\/frenchdistrict.com\/caraibes\/wp-content\/uploads\/sites\/16\/2026\/11\/yellowstone-beartooth-pika-810x540.jpg 810w, https:\/\/frenchdistrict.com\/caraibes\/wp-content\/uploads\/sites\/16\/2026\/11\/yellowstone-beartooth-pika-1140x760.jpg 1140w, https:\/\/frenchdistrict.com\/caraibes\/wp-content\/uploads\/sites\/16\/2026\/11\/yellowstone-beartooth-pika.jpg 2000w\" sizes=\"auto, (max-width: 810px) 100vw, 810px\" \/><\/a><p id=\"caption-attachment-68960\" class=\"wp-caption-text\">Un pika, petit cousin du li\u00e8vre, dans la toundra de la Beartooth Highway. <span style=\"font-size: 12px; font-style: italic;\">Cr\u00e9dit photo : Ben B. \/ French District<\/span><\/p><\/div>\n<p style=\"background: #f7f4ee; border-left: 4px solid #A41B1F; padding: 10px 14px; font-size: 15px; line-height: 1.6;\"><strong>Acc\u00e8s<\/strong>&nbsp;: route goudronn\u00e9e, voiture ordinaire, du 28 mai au 11 octobre 2027 \u00b7 <strong>Comptez<\/strong>&nbsp;: une demi-journ\u00e9e avec les arr\u00eats \u00b7 <strong>Notre avis<\/strong>&nbsp;: la plus belle fa\u00e7on d&#8217;entrer dans le parc, et la vall\u00e9e de Lamar juste apr\u00e8s<\/p>\n<h2 id=\"geysers\" style=\"scroll-margin-top: 80px;\">Que voir \u00e0 Yellowstone ? Old Faithful et les geysers<\/h2>\n<p>\u00c9videmment, les <strong>geysers<\/strong>. C&#8217;est l&#8217;une des principales attractions de Yellowstone&nbsp;: on en compte plus de 500 en activit\u00e9, plus de la moiti\u00e9 des geysers du monde, parmi plus de 10&nbsp;000 <i class=\"fa fa-link\" aria-hidden=\"true\"><\/i> <a href=\"https:\/\/frenchdistrict.com\/californie-nord\/articles\/phenomenes-naturels-etats-unis-seisme-aurores-boreales\/\">ph\u00e9nom\u00e8nes g\u00e9othermiques<\/a> (sources chaudes, fumerolles, mares de boue, etc.).<br \/>\n<div id=\"attachment_62275\" style=\"width: 820px\" class=\"wp-caption aligncenter\"><a href=\"https:\/\/frenchdistrict.com\/caraibes\/wp-content\/uploads\/sites\/16\/2025\/05\/weekend-visite-parc-naturel-yellowstone-wyoming-03.jpg\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-62275\" class=\"wp-image-62275 size-large\" src=\"https:\/\/frenchdistrict.com\/caraibes\/wp-content\/uploads\/sites\/16\/2025\/05\/weekend-visite-parc-naturel-yellowstone-wyoming-03-1024x683.jpg\" alt=\"Le jet blanc d&#039;Old Faithful s&#039;\u00e9l\u00e8ve au-dessus de son c\u00f4ne de silice, sous un ciel bleu\" width=\"810\" height=\"540\" srcset=\"https:\/\/frenchdistrict.com\/caraibes\/wp-content\/uploads\/sites\/16\/2025\/05\/weekend-visite-parc-naturel-yellowstone-wyoming-03-1024x683.jpg 1024w, https:\/\/frenchdistrict.com\/caraibes\/wp-content\/uploads\/sites\/16\/2025\/05\/weekend-visite-parc-naturel-yellowstone-wyoming-03-300x200.jpg 300w, https:\/\/frenchdistrict.com\/caraibes\/wp-content\/uploads\/sites\/16\/2025\/05\/weekend-visite-parc-naturel-yellowstone-wyoming-03-768x512.jpg 768w, https:\/\/frenchdistrict.com\/caraibes\/wp-content\/uploads\/sites\/16\/2025\/05\/weekend-visite-parc-naturel-yellowstone-wyoming-03-1536x1024.jpg 1536w, https:\/\/frenchdistrict.com\/caraibes\/wp-content\/uploads\/sites\/16\/2025\/05\/weekend-visite-parc-naturel-yellowstone-wyoming-03-810x540.jpg 810w, https:\/\/frenchdistrict.com\/caraibes\/wp-content\/uploads\/sites\/16\/2025\/05\/weekend-visite-parc-naturel-yellowstone-wyoming-03-1140x760.jpg 1140w, https:\/\/frenchdistrict.com\/caraibes\/wp-content\/uploads\/sites\/16\/2025\/05\/weekend-visite-parc-naturel-yellowstone-wyoming-03.jpg 1920w\" sizes=\"auto, (max-width: 810px) 100vw, 810px\" \/><\/a><p id=\"caption-attachment-62275\" class=\"wp-caption-text\">Old Faithful jaillit environ 17 fois par jour, \u00e0 32 \u00e0 56 m de haut.<\/p><\/div>\nParmi tous ces geysers, le plus c\u00e9l\u00e8bre reste \u00ab <strong><em>Old Faithful<\/em><\/strong> \u00bb&nbsp;: il jaillit environ 17 fois par jour, toutes les 68 ou 94 minutes selon la dur\u00e9e de l&#8217;\u00e9ruption pr\u00e9c\u00e9dente, \u00e0 32 \u00e0 56&nbsp;m de haut. Le centre d&#8217;accueil affiche l&#8217;heure de la prochaine \u00e9ruption, \u00e0 dix minutes pr\u00e8s. Le plus haut, \u00ab <strong><em>Steamboat Geyser<\/em><\/strong> \u00bb, \u00e0 Norris, est le plus haut geyser actif du monde&nbsp;: plus de 91&nbsp;m, mais \u00e0 des intervalles impr\u00e9visibles. Autour des geysers, l&#8217;eau chaude d\u00e9pose de la silice, qui forme des c\u00f4nes et des terrasses blanches&nbsp;; \u00e0 Mammoth Hot Springs, c&#8217;est du calcaire (le travertin) qui dessine les c\u00e9l\u00e8bres terrasses.<br \/>\n<div id=\"attachment_68970\" style=\"width: 820px\" class=\"wp-caption aligncenter\"><a href=\"https:\/\/frenchdistrict.com\/caraibes\/wp-content\/uploads\/sites\/16\/2026\/11\/yellowstone-old-faithful-cone.jpg\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-68970\" class=\"wp-image-68970 size-large\" src=\"https:\/\/frenchdistrict.com\/caraibes\/wp-content\/uploads\/sites\/16\/2026\/11\/yellowstone-old-faithful-cone-1024x682.jpg\" alt=\"Le c\u00f4ne blanc d&#039;Old Faithful fume doucement au milieu d&#039;une prairie dor\u00e9e, devant une for\u00eat de pins\" width=\"810\" height=\"539\" srcset=\"https:\/\/frenchdistrict.com\/caraibes\/wp-content\/uploads\/sites\/16\/2026\/11\/yellowstone-old-faithful-cone-1024x682.jpg 1024w, https:\/\/frenchdistrict.com\/caraibes\/wp-content\/uploads\/sites\/16\/2026\/11\/yellowstone-old-faithful-cone-300x200.jpg 300w, https:\/\/frenchdistrict.com\/caraibes\/wp-content\/uploads\/sites\/16\/2026\/11\/yellowstone-old-faithful-cone-768x512.jpg 768w, https:\/\/frenchdistrict.com\/caraibes\/wp-content\/uploads\/sites\/16\/2026\/11\/yellowstone-old-faithful-cone-1536x1024.jpg 1536w, https:\/\/frenchdistrict.com\/caraibes\/wp-content\/uploads\/sites\/16\/2026\/11\/yellowstone-old-faithful-cone-810x540.jpg 810w, https:\/\/frenchdistrict.com\/caraibes\/wp-content\/uploads\/sites\/16\/2026\/11\/yellowstone-old-faithful-cone-1140x760.jpg 1140w, https:\/\/frenchdistrict.com\/caraibes\/wp-content\/uploads\/sites\/16\/2026\/11\/yellowstone-old-faithful-cone.jpg 2000w\" sizes=\"auto, (max-width: 810px) 100vw, 810px\" \/><\/a><p id=\"caption-attachment-68970\" class=\"wp-caption-text\">Old Faithful entre deux \u00e9ruptions : le centre d&#8217;accueil affiche l&#8217;heure de la suivante, \u00e0 dix minutes pr\u00e8s. <span style=\"font-size: 12px; font-style: italic;\">Cr\u00e9dit photo : Ben B. \/ French District<\/span><\/p><\/div>\n<p style=\"background: #f7f4ee; border-left: 4px solid #A41B1F; padding: 10px 14px; font-size: 15px; line-height: 1.6;\"><strong>Marche<\/strong>&nbsp;: passerelles et chemin goudronn\u00e9 de l&#8217;Old Faithful Inn \u00e0 Morning Glory Pool, environ 3,2&nbsp;km aller-retour, plat&nbsp;; Observation Point, 0,8&nbsp;km de lacets pour voir le bassin d&#8217;en haut \u00b7 <strong>Comptez<\/strong>&nbsp;: de 1 h 30 \u00e0 une demi-journ\u00e9e \u00b7 <strong>\u00c0 ne pas manquer<\/strong>&nbsp;: Giant Geyser, Grotto Geyser, Crested Pool et Chromatic Pool<\/p>\n<p>Sur la promenade de l&#8217;<strong>Upper Geyser Basin<\/strong>, au nord d&#8217;Old Faithful, les c\u00f4nes ont chacun leur caract\u00e8re. Giant Geyser peut projeter de l&#8217;eau \u00e0 76&nbsp;m pendant plus d&#8217;une heure, mais ses \u00e9ruptions sont rares et impr\u00e9visibles&nbsp;: plus de 50 en 2007, une seule en 2010. Crested Pool, \u00e0 88&nbsp;\u00b0C, est presque toujours en \u00e9bullition.<br \/>\n<div id=\"attachment_68969\" style=\"width: 820px\" class=\"wp-caption aligncenter\"><a href=\"https:\/\/frenchdistrict.com\/caraibes\/wp-content\/uploads\/sites\/16\/2026\/11\/yellowstone-giant-geyser.jpg\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-68969\" class=\"wp-image-68969 size-large\" src=\"https:\/\/frenchdistrict.com\/caraibes\/wp-content\/uploads\/sites\/16\/2026\/11\/yellowstone-giant-geyser-1024x682.jpg\" alt=\"Le grand c\u00f4ne de geys\u00e9rite de Giant Geyser, fumant, devant une for\u00eat de pins\" width=\"810\" height=\"539\" srcset=\"https:\/\/frenchdistrict.com\/caraibes\/wp-content\/uploads\/sites\/16\/2026\/11\/yellowstone-giant-geyser-1024x682.jpg 1024w, https:\/\/frenchdistrict.com\/caraibes\/wp-content\/uploads\/sites\/16\/2026\/11\/yellowstone-giant-geyser-300x200.jpg 300w, https:\/\/frenchdistrict.com\/caraibes\/wp-content\/uploads\/sites\/16\/2026\/11\/yellowstone-giant-geyser-768x512.jpg 768w, https:\/\/frenchdistrict.com\/caraibes\/wp-content\/uploads\/sites\/16\/2026\/11\/yellowstone-giant-geyser-1536x1024.jpg 1536w, https:\/\/frenchdistrict.com\/caraibes\/wp-content\/uploads\/sites\/16\/2026\/11\/yellowstone-giant-geyser-810x540.jpg 810w, https:\/\/frenchdistrict.com\/caraibes\/wp-content\/uploads\/sites\/16\/2026\/11\/yellowstone-giant-geyser-1140x760.jpg 1140w, https:\/\/frenchdistrict.com\/caraibes\/wp-content\/uploads\/sites\/16\/2026\/11\/yellowstone-giant-geyser.jpg 2000w\" sizes=\"auto, (max-width: 810px) 100vw, 810px\" \/><\/a><p id=\"caption-attachment-68969\" class=\"wp-caption-text\">Le c\u00f4ne de Giant Geyser, dans l&#8217;Upper Geyser Basin. <span style=\"font-size: 12px; font-style: italic;\">Cr\u00e9dit photo : Ben B. \/ French District<\/span><\/p><\/div>\n<div id=\"attachment_68968\" style=\"width: 820px\" class=\"wp-caption aligncenter\"><a href=\"https:\/\/frenchdistrict.com\/caraibes\/wp-content\/uploads\/sites\/16\/2026\/11\/yellowstone-grotto-geyser.jpg\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-68968\" class=\"wp-image-68968 size-large\" src=\"https:\/\/frenchdistrict.com\/caraibes\/wp-content\/uploads\/sites\/16\/2026\/11\/yellowstone-grotto-geyser-1024x682.jpg\" alt=\"Le c\u00f4ne de Grotto Geyser, perc\u00e9 de cavit\u00e9s aux formes arrondies, au bord de la passerelle\" width=\"810\" height=\"539\" srcset=\"https:\/\/frenchdistrict.com\/caraibes\/wp-content\/uploads\/sites\/16\/2026\/11\/yellowstone-grotto-geyser-1024x682.jpg 1024w, https:\/\/frenchdistrict.com\/caraibes\/wp-content\/uploads\/sites\/16\/2026\/11\/yellowstone-grotto-geyser-300x200.jpg 300w, https:\/\/frenchdistrict.com\/caraibes\/wp-content\/uploads\/sites\/16\/2026\/11\/yellowstone-grotto-geyser-768x512.jpg 768w, https:\/\/frenchdistrict.com\/caraibes\/wp-content\/uploads\/sites\/16\/2026\/11\/yellowstone-grotto-geyser-1536x1024.jpg 1536w, https:\/\/frenchdistrict.com\/caraibes\/wp-content\/uploads\/sites\/16\/2026\/11\/yellowstone-grotto-geyser-810x540.jpg 810w, https:\/\/frenchdistrict.com\/caraibes\/wp-content\/uploads\/sites\/16\/2026\/11\/yellowstone-grotto-geyser-1140x760.jpg 1140w, https:\/\/frenchdistrict.com\/caraibes\/wp-content\/uploads\/sites\/16\/2026\/11\/yellowstone-grotto-geyser.jpg 2000w\" sizes=\"auto, (max-width: 810px) 100vw, 810px\" \/><\/a><p id=\"caption-attachment-68968\" class=\"wp-caption-text\">Grotto Geyser et son c\u00f4ne aux formes tourment\u00e9es, au bord de la passerelle. <span style=\"font-size: 12px; font-style: italic;\">Cr\u00e9dit photo : Ben B. \/ French District<\/span><\/p><\/div>\n<div id=\"attachment_68967\" style=\"width: 820px\" class=\"wp-caption aligncenter\"><a href=\"https:\/\/frenchdistrict.com\/caraibes\/wp-content\/uploads\/sites\/16\/2026\/11\/yellowstone-crested-pool.jpg\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-68967\" class=\"wp-image-68967 size-large\" src=\"https:\/\/frenchdistrict.com\/caraibes\/wp-content\/uploads\/sites\/16\/2026\/11\/yellowstone-crested-pool-1024x682.jpg\" alt=\"Une source bleue en \u00e9bullition au centre d&#039;une large bordure orange, dans un nuage de vapeur\" width=\"810\" height=\"539\" srcset=\"https:\/\/frenchdistrict.com\/caraibes\/wp-content\/uploads\/sites\/16\/2026\/11\/yellowstone-crested-pool-1024x682.jpg 1024w, https:\/\/frenchdistrict.com\/caraibes\/wp-content\/uploads\/sites\/16\/2026\/11\/yellowstone-crested-pool-300x200.jpg 300w, https:\/\/frenchdistrict.com\/caraibes\/wp-content\/uploads\/sites\/16\/2026\/11\/yellowstone-crested-pool-768x512.jpg 768w, https:\/\/frenchdistrict.com\/caraibes\/wp-content\/uploads\/sites\/16\/2026\/11\/yellowstone-crested-pool-1536x1024.jpg 1536w, https:\/\/frenchdistrict.com\/caraibes\/wp-content\/uploads\/sites\/16\/2026\/11\/yellowstone-crested-pool-810x540.jpg 810w, https:\/\/frenchdistrict.com\/caraibes\/wp-content\/uploads\/sites\/16\/2026\/11\/yellowstone-crested-pool-1140x760.jpg 1140w, https:\/\/frenchdistrict.com\/caraibes\/wp-content\/uploads\/sites\/16\/2026\/11\/yellowstone-crested-pool.jpg 2000w\" sizes=\"auto, (max-width: 810px) 100vw, 810px\" \/><\/a><p id=\"caption-attachment-68967\" class=\"wp-caption-text\">Crested Pool, \u00e0 88 \u00b0C, presque toujours en \u00e9bullition. <span style=\"font-size: 12px; font-style: italic;\">Cr\u00e9dit photo : Ben B. \/ French District<\/span><\/p><\/div>\n<div id=\"attachment_68966\" style=\"width: 820px\" class=\"wp-caption aligncenter\"><a href=\"https:\/\/frenchdistrict.com\/caraibes\/wp-content\/uploads\/sites\/16\/2026\/11\/yellowstone-chromatic-pool.jpg\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-68966\" class=\"wp-image-68966 size-large\" src=\"https:\/\/frenchdistrict.com\/caraibes\/wp-content\/uploads\/sites\/16\/2026\/11\/yellowstone-chromatic-pool-1024x682.jpg\" alt=\"Une grande source aux eaux bleu-vert refl\u00e9tant les pins, bord\u00e9e d&#039;orange et de taches jaunes\" width=\"810\" height=\"539\" srcset=\"https:\/\/frenchdistrict.com\/caraibes\/wp-content\/uploads\/sites\/16\/2026\/11\/yellowstone-chromatic-pool-1024x682.jpg 1024w, https:\/\/frenchdistrict.com\/caraibes\/wp-content\/uploads\/sites\/16\/2026\/11\/yellowstone-chromatic-pool-300x200.jpg 300w, https:\/\/frenchdistrict.com\/caraibes\/wp-content\/uploads\/sites\/16\/2026\/11\/yellowstone-chromatic-pool-768x512.jpg 768w, https:\/\/frenchdistrict.com\/caraibes\/wp-content\/uploads\/sites\/16\/2026\/11\/yellowstone-chromatic-pool-1536x1024.jpg 1536w, https:\/\/frenchdistrict.com\/caraibes\/wp-content\/uploads\/sites\/16\/2026\/11\/yellowstone-chromatic-pool-810x540.jpg 810w, https:\/\/frenchdistrict.com\/caraibes\/wp-content\/uploads\/sites\/16\/2026\/11\/yellowstone-chromatic-pool-1140x760.jpg 1140w, https:\/\/frenchdistrict.com\/caraibes\/wp-content\/uploads\/sites\/16\/2026\/11\/yellowstone-chromatic-pool.jpg 2000w\" sizes=\"auto, (max-width: 810px) 100vw, 810px\" \/><\/a><p id=\"caption-attachment-68966\" class=\"wp-caption-text\">Chromatic Pool, reli\u00e9e \u00e0 sa voisine Beauty Pool : quand l&#8217;une monte, l&#8217;autre baisse. <span style=\"font-size: 12px; font-style: italic;\">Cr\u00e9dit photo : Ben B. \/ French District<\/span><\/p><\/div>\n<h2 id=\"grand-prismatic\" style=\"scroll-margin-top: 80px;\">Grand Prismatic Spring et Fountain Paint Pot<\/h2>\n<p>Le <em><strong>Grand Prismatic Spring<\/strong><\/em>, au Midway Geyser Basin, est la plus grande source chaude du parc&nbsp;: environ 100&nbsp;m de diam\u00e8tre et plus de 37&nbsp;m de profondeur. Ses anneaux de couleur viennent des micro-organismes qui y vivent, chacun dans sa plage de temp\u00e9rature. Pour la voir en entier, montez au point de vue du sentier de Fairy Falls&nbsp;: 1&nbsp;km de mont\u00e9e douce depuis le parking, 1,6&nbsp;km au sud de Midway.<br \/>\n<div id=\"attachment_62270\" style=\"width: 820px\" class=\"wp-caption aligncenter\"><a href=\"https:\/\/frenchdistrict.com\/caraibes\/wp-content\/uploads\/sites\/16\/2025\/05\/weekend-visite-parc-naturel-yellowstone-wyoming-prismatic.jpg\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-62270\" class=\"wp-image-62270 size-large\" src=\"https:\/\/frenchdistrict.com\/caraibes\/wp-content\/uploads\/sites\/16\/2025\/05\/weekend-visite-parc-naturel-yellowstone-wyoming-prismatic-1024x379.jpg\" alt=\"Vue d&#039;en haut du Grand Prismatic Spring, bleu au centre, cercl\u00e9 de jaune et d&#039;orange, avec la passerelle des visiteurs\" width=\"810\" height=\"300\" srcset=\"https:\/\/frenchdistrict.com\/caraibes\/wp-content\/uploads\/sites\/16\/2025\/05\/weekend-visite-parc-naturel-yellowstone-wyoming-prismatic-1024x379.jpg 1024w, https:\/\/frenchdistrict.com\/caraibes\/wp-content\/uploads\/sites\/16\/2025\/05\/weekend-visite-parc-naturel-yellowstone-wyoming-prismatic-300x111.jpg 300w, https:\/\/frenchdistrict.com\/caraibes\/wp-content\/uploads\/sites\/16\/2025\/05\/weekend-visite-parc-naturel-yellowstone-wyoming-prismatic-768x284.jpg 768w, https:\/\/frenchdistrict.com\/caraibes\/wp-content\/uploads\/sites\/16\/2025\/05\/weekend-visite-parc-naturel-yellowstone-wyoming-prismatic-1536x569.jpg 1536w, https:\/\/frenchdistrict.com\/caraibes\/wp-content\/uploads\/sites\/16\/2025\/05\/weekend-visite-parc-naturel-yellowstone-wyoming-prismatic-810x300.jpg 810w, https:\/\/frenchdistrict.com\/caraibes\/wp-content\/uploads\/sites\/16\/2025\/05\/weekend-visite-parc-naturel-yellowstone-wyoming-prismatic-1140x422.jpg 1140w, https:\/\/frenchdistrict.com\/caraibes\/wp-content\/uploads\/sites\/16\/2025\/05\/weekend-visite-parc-naturel-yellowstone-wyoming-prismatic.jpg 1920w\" sizes=\"auto, (max-width: 810px) 100vw, 810px\" \/><\/a><p id=\"caption-attachment-62270\" class=\"wp-caption-text\">Le Grand Prismatic Spring vu d&#8217;en haut, comme depuis le point de vue du sentier de Fairy Falls.<\/p><\/div>\n\u00c0 quelques kilom\u00e8tres au nord, la boucle de <strong>Fountain Paint Pot<\/strong> (0,8&nbsp;km de passerelles, 30 \u00e0 45 minutes) r\u00e9unit les quatre types de ph\u00e9nom\u00e8nes du parc&nbsp;: sources chaudes, geysers, mares de boue et fumerolles. Plus au nord encore, la petite route \u00e0 sens unique de <strong>Firehole Canyon Drive<\/strong> longe les rapides et la chute de la rivi\u00e8re Firehole, entre deux falaises de roche volcanique.<br \/>\n<div id=\"attachment_68965\" style=\"width: 820px\" class=\"wp-caption aligncenter\"><a href=\"https:\/\/frenchdistrict.com\/caraibes\/wp-content\/uploads\/sites\/16\/2026\/11\/yellowstone-firehole-canyon.jpg\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-68965\" class=\"wp-image-68965 size-large\" src=\"https:\/\/frenchdistrict.com\/caraibes\/wp-content\/uploads\/sites\/16\/2026\/11\/yellowstone-firehole-canyon-1024x682.jpg\" alt=\"La rivi\u00e8re Firehole, blanche d&#039;\u00e9cume, serpente au fond d&#039;un canyon bois\u00e9\" width=\"810\" height=\"539\" srcset=\"https:\/\/frenchdistrict.com\/caraibes\/wp-content\/uploads\/sites\/16\/2026\/11\/yellowstone-firehole-canyon-1024x682.jpg 1024w, https:\/\/frenchdistrict.com\/caraibes\/wp-content\/uploads\/sites\/16\/2026\/11\/yellowstone-firehole-canyon-300x200.jpg 300w, https:\/\/frenchdistrict.com\/caraibes\/wp-content\/uploads\/sites\/16\/2026\/11\/yellowstone-firehole-canyon-768x512.jpg 768w, https:\/\/frenchdistrict.com\/caraibes\/wp-content\/uploads\/sites\/16\/2026\/11\/yellowstone-firehole-canyon-1536x1024.jpg 1536w, https:\/\/frenchdistrict.com\/caraibes\/wp-content\/uploads\/sites\/16\/2026\/11\/yellowstone-firehole-canyon-810x540.jpg 810w, https:\/\/frenchdistrict.com\/caraibes\/wp-content\/uploads\/sites\/16\/2026\/11\/yellowstone-firehole-canyon-1140x760.jpg 1140w, https:\/\/frenchdistrict.com\/caraibes\/wp-content\/uploads\/sites\/16\/2026\/11\/yellowstone-firehole-canyon.jpg 2000w\" sizes=\"auto, (max-width: 810px) 100vw, 810px\" \/><\/a><p id=\"caption-attachment-68965\" class=\"wp-caption-text\">Le canyon de la rivi\u00e8re Firehole, le long de Firehole Canyon Drive. <span style=\"font-size: 12px; font-style: italic;\">Cr\u00e9dit photo : Ben B. \/ French District<\/span><\/p><\/div>\n<h2 id=\"west-thumb\" style=\"scroll-margin-top: 80px;\">West Thumb, des sources au bord du lac<\/h2>\n<p>Sur la rive ouest du <strong>lac Yellowstone<\/strong>, le bassin de <strong>West Thumb<\/strong> aligne des sources turquoise au bord de l&#8217;eau. La baie elle-m\u00eame est n\u00e9e d&#8217;une \u00e9ruption, il y a environ 174&nbsp;000 ans. Abyss Pool, profonde de 16&nbsp;m, est l&#8217;une des sources les plus profondes du parc&nbsp;; Black Pool doit son nom \u00e0 ses micro-organismes vert fonc\u00e9 et bruns, remplac\u00e9s par des orange et des jaunes depuis que son eau s&#8217;est r\u00e9chauff\u00e9e.<br \/>\n<div id=\"attachment_68964\" style=\"width: 692px\" class=\"wp-caption aligncenter\"><a href=\"https:\/\/frenchdistrict.com\/caraibes\/wp-content\/uploads\/sites\/16\/2026\/11\/yellowstone-west-thumb-lac.jpg\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-68964\" class=\"wp-image-68964 size-large\" src=\"https:\/\/frenchdistrict.com\/caraibes\/wp-content\/uploads\/sites\/16\/2026\/11\/yellowstone-west-thumb-lac-682x1024.jpg\" alt=\"Une source turquoise bord\u00e9e d&#039;orange au pied d&#039;une passerelle en bois, le lac Yellowstone \u00e0 l&#039;horizon\" width=\"682\" height=\"1024\" srcset=\"https:\/\/frenchdistrict.com\/caraibes\/wp-content\/uploads\/sites\/16\/2026\/11\/yellowstone-west-thumb-lac-682x1024.jpg 682w, https:\/\/frenchdistrict.com\/caraibes\/wp-content\/uploads\/sites\/16\/2026\/11\/yellowstone-west-thumb-lac-200x300.jpg 200w, https:\/\/frenchdistrict.com\/caraibes\/wp-content\/uploads\/sites\/16\/2026\/11\/yellowstone-west-thumb-lac-768x1152.jpg 768w, https:\/\/frenchdistrict.com\/caraibes\/wp-content\/uploads\/sites\/16\/2026\/11\/yellowstone-west-thumb-lac-1024x1536.jpg 1024w, https:\/\/frenchdistrict.com\/caraibes\/wp-content\/uploads\/sites\/16\/2026\/11\/yellowstone-west-thumb-lac-810x1215.jpg 810w, https:\/\/frenchdistrict.com\/caraibes\/wp-content\/uploads\/sites\/16\/2026\/11\/yellowstone-west-thumb-lac-1140x1710.jpg 1140w, https:\/\/frenchdistrict.com\/caraibes\/wp-content\/uploads\/sites\/16\/2026\/11\/yellowstone-west-thumb-lac.jpg 1333w\" sizes=\"auto, (max-width: 682px) 100vw, 682px\" \/><\/a><p id=\"caption-attachment-68964\" class=\"wp-caption-text\">Les passerelles de West Thumb, entre les sources chaudes et le lac Yellowstone. <span style=\"font-size: 12px; font-style: italic;\">Cr\u00e9dit photo : Ben B. \/ French District<\/span><\/p><\/div>\n<p style=\"background: #f7f4ee; border-left: 4px solid #A41B1F; padding: 10px 14px; font-size: 15px; line-height: 1.6;\"><strong>Marche<\/strong>&nbsp;: deux boucles de passerelles de 800 et 400&nbsp;m \u00b7 <strong>Comptez<\/strong>&nbsp;: 30 minutes \u00e0 une heure \u00b7 <strong>Acc\u00e8s<\/strong>&nbsp;: entre l&#8217;entr\u00e9e sud et Old Faithful, route ouverte du 14 mai au 31 octobre 2027 \u00b7 <strong>Notre avis<\/strong>&nbsp;: la plus belle \u00e9tape sur la route de Grand Teton<\/p>\n<h2 id=\"canyon\" style=\"scroll-margin-top: 80px;\">Le Grand Canyon of the Yellowstone et Tower Fall<\/h2>\n<p>Le <strong>Grand Canyon of the Yellowstone<\/strong> s&#8217;\u00e9tire sur environ 32&nbsp;km, sur plus de 300&nbsp;m de profondeur, entre des falaises jaunes et ocre. Les Lower Falls y tombent de 94&nbsp;m&nbsp;: c&#8217;est la plus haute chute du parc visible depuis une route. Artist Point, sur la rive sud, offre la vue la plus c\u00e9l\u00e8bre&nbsp;; on ne voit jamais les deux chutes depuis le m\u00eame point.<\/p>\n<p>Plus au nord, \u00e0 la sortie du canyon, <strong>Tower Fall<\/strong> plonge de 40&nbsp;m entre des aiguilles de roche volcanique, \u00e0 quelques pas de la route et d&#8217;une \u00e9picerie ouverte de fin mai \u00e0 fin septembre.<br \/>\n<div id=\"attachment_68963\" style=\"width: 820px\" class=\"wp-caption aligncenter\"><a href=\"https:\/\/frenchdistrict.com\/caraibes\/wp-content\/uploads\/sites\/16\/2026\/11\/yellowstone-tower-fall.jpg\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-68963\" class=\"wp-image-68963 size-large\" src=\"https:\/\/frenchdistrict.com\/caraibes\/wp-content\/uploads\/sites\/16\/2026\/11\/yellowstone-tower-fall-1024x682.jpg\" alt=\"Une chute d&#039;eau fine tombe entre des aiguilles de roche grise, dans une gorge couverte de pins\" width=\"810\" height=\"539\" srcset=\"https:\/\/frenchdistrict.com\/caraibes\/wp-content\/uploads\/sites\/16\/2026\/11\/yellowstone-tower-fall-1024x682.jpg 1024w, https:\/\/frenchdistrict.com\/caraibes\/wp-content\/uploads\/sites\/16\/2026\/11\/yellowstone-tower-fall-300x200.jpg 300w, https:\/\/frenchdistrict.com\/caraibes\/wp-content\/uploads\/sites\/16\/2026\/11\/yellowstone-tower-fall-768x512.jpg 768w, https:\/\/frenchdistrict.com\/caraibes\/wp-content\/uploads\/sites\/16\/2026\/11\/yellowstone-tower-fall-1536x1024.jpg 1536w, https:\/\/frenchdistrict.com\/caraibes\/wp-content\/uploads\/sites\/16\/2026\/11\/yellowstone-tower-fall-810x540.jpg 810w, https:\/\/frenchdistrict.com\/caraibes\/wp-content\/uploads\/sites\/16\/2026\/11\/yellowstone-tower-fall-1140x760.jpg 1140w, https:\/\/frenchdistrict.com\/caraibes\/wp-content\/uploads\/sites\/16\/2026\/11\/yellowstone-tower-fall.jpg 2000w\" sizes=\"auto, (max-width: 810px) 100vw, 810px\" \/><\/a><p id=\"caption-attachment-68963\" class=\"wp-caption-text\">Tower Fall plonge de 40 m entre ses aiguilles de roche volcanique. <span style=\"font-size: 12px; font-style: italic;\">Cr\u00e9dit photo : Ben B. \/ French District<\/span><\/p><\/div>\n<h2 id=\"faune\" style=\"scroll-margin-top: 80px;\">Les animaux et la vie sauvage<\/h2>\n<p>Tout aussi c\u00e9l\u00e8bre que ses geysers, la <strong>faune sauvage de Yellowstone<\/strong> est abondante et m\u00e9rite le d\u00e9tour. Yellowstone est l&#8217;un des rares endroits aux \u00c9tats-Unis o\u00f9 l&#8217;on peut observer, dans un m\u00eame parc, des bisons, des wapitis, des loups et des grizzlis. On vous conseille de vous balader dans le parc t\u00f4t le matin ou \u00e0 la tomb\u00e9e du jour pour avoir le plus de chances possibles d&#8217;apercevoir des animaux, notamment dans la vall\u00e9e de Lamar, \u00ab l&#8217;un des meilleurs endroits du monde pour observer les loups \u00bb selon le NPS, et dans la vall\u00e9e de Hayden. Ce sont les heures auxquelles ils sortent se nourrir.<br \/>\n<div id=\"attachment_68962\" style=\"width: 820px\" class=\"wp-caption aligncenter\"><a href=\"https:\/\/frenchdistrict.com\/caraibes\/wp-content\/uploads\/sites\/16\/2026\/11\/yellowstone-bisons-nord-est.jpg\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-68962\" class=\"wp-image-68962 size-large\" src=\"https:\/\/frenchdistrict.com\/caraibes\/wp-content\/uploads\/sites\/16\/2026\/11\/yellowstone-bisons-nord-est-1024x682.jpg\" alt=\"Un troupeau de bisons broute dans une prairie d&#039;herbes s\u00e8ches, au pied de collines bois\u00e9es\" width=\"810\" height=\"539\" srcset=\"https:\/\/frenchdistrict.com\/caraibes\/wp-content\/uploads\/sites\/16\/2026\/11\/yellowstone-bisons-nord-est-1024x682.jpg 1024w, https:\/\/frenchdistrict.com\/caraibes\/wp-content\/uploads\/sites\/16\/2026\/11\/yellowstone-bisons-nord-est-300x200.jpg 300w, https:\/\/frenchdistrict.com\/caraibes\/wp-content\/uploads\/sites\/16\/2026\/11\/yellowstone-bisons-nord-est-768x512.jpg 768w, https:\/\/frenchdistrict.com\/caraibes\/wp-content\/uploads\/sites\/16\/2026\/11\/yellowstone-bisons-nord-est-1536x1024.jpg 1536w, https:\/\/frenchdistrict.com\/caraibes\/wp-content\/uploads\/sites\/16\/2026\/11\/yellowstone-bisons-nord-est-810x540.jpg 810w, https:\/\/frenchdistrict.com\/caraibes\/wp-content\/uploads\/sites\/16\/2026\/11\/yellowstone-bisons-nord-est-1140x760.jpg 1140w, https:\/\/frenchdistrict.com\/caraibes\/wp-content\/uploads\/sites\/16\/2026\/11\/yellowstone-bisons-nord-est.jpg 2000w\" sizes=\"auto, (max-width: 810px) 100vw, 810px\" \/><\/a><p id=\"caption-attachment-68962\" class=\"wp-caption-text\">Bisons dans les prairies du nord-est du parc, entre l&#8217;entr\u00e9e nord-est et Tower Fall, en ao\u00fbt. <span style=\"font-size: 12px; font-style: italic;\">Cr\u00e9dit photo : Ben B. \/ French District<\/span><\/p><\/div>\nLe bison de Yellowstone n&#8217;a jamais disparu du parc&nbsp;: c&#8217;est le seul endroit des \u00c9tats-Unis o\u00f9 il vit sans interruption depuis la pr\u00e9histoire. Le braconnage l&#8217;avait r\u00e9duit \u00e0 une vingtaine de b\u00eates en 1902&nbsp;; l&#8217;arm\u00e9e a alors ajout\u00e9 21 bisons venus de troupeaux priv\u00e9s, \u00e9lev\u00e9s au Lamar Buffalo Ranch, et le troupeau est aujourd&#8217;hui le plus grand du pays sur des terres publiques. Les loups, eux, ont bien \u00e9t\u00e9 r\u00e9introduits&nbsp;: 41 loups venus du Canada et du Montana ont \u00e9t\u00e9 rel\u00e2ch\u00e9s de 1995 \u00e0 1997.<br \/>\n<div id=\"attachment_62271\" style=\"width: 820px\" class=\"wp-caption aligncenter\"><a href=\"https:\/\/frenchdistrict.com\/caraibes\/wp-content\/uploads\/sites\/16\/2025\/05\/weekend-visite-parc-naturel-yellowstone-wyoming-bisons.jpg\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-62271\" class=\"wp-image-62271 size-large\" src=\"https:\/\/frenchdistrict.com\/caraibes\/wp-content\/uploads\/sites\/16\/2025\/05\/weekend-visite-parc-naturel-yellowstone-wyoming-bisons-1024x683.jpg\" alt=\"Un troupeau de bisons marche au milieu d&#039;une route du parc, des voitures arr\u00eat\u00e9es derri\u00e8re eux\" width=\"810\" height=\"540\" srcset=\"https:\/\/frenchdistrict.com\/caraibes\/wp-content\/uploads\/sites\/16\/2025\/05\/weekend-visite-parc-naturel-yellowstone-wyoming-bisons-1024x683.jpg 1024w, https:\/\/frenchdistrict.com\/caraibes\/wp-content\/uploads\/sites\/16\/2025\/05\/weekend-visite-parc-naturel-yellowstone-wyoming-bisons-300x200.jpg 300w, https:\/\/frenchdistrict.com\/caraibes\/wp-content\/uploads\/sites\/16\/2025\/05\/weekend-visite-parc-naturel-yellowstone-wyoming-bisons-768x512.jpg 768w, https:\/\/frenchdistrict.com\/caraibes\/wp-content\/uploads\/sites\/16\/2025\/05\/weekend-visite-parc-naturel-yellowstone-wyoming-bisons-1536x1024.jpg 1536w, https:\/\/frenchdistrict.com\/caraibes\/wp-content\/uploads\/sites\/16\/2025\/05\/weekend-visite-parc-naturel-yellowstone-wyoming-bisons-810x540.jpg 810w, https:\/\/frenchdistrict.com\/caraibes\/wp-content\/uploads\/sites\/16\/2025\/05\/weekend-visite-parc-naturel-yellowstone-wyoming-bisons-1140x760.jpg 1140w, https:\/\/frenchdistrict.com\/caraibes\/wp-content\/uploads\/sites\/16\/2025\/05\/weekend-visite-parc-naturel-yellowstone-wyoming-bisons.jpg 1920w\" sizes=\"auto, (max-width: 810px) 100vw, 810px\" \/><\/a><p id=\"caption-attachment-62271\" class=\"wp-caption-text\">Ici, ce sont les bisons qui ont la priorit\u00e9.<\/p><\/div>\nRappel&nbsp;: il est strictement interdit de nourrir les animaux, oiseaux et \u00e9cureuils compris, et il faut respecter les distances de s\u00e9curit\u00e9 (91&nbsp;m pour les ours, les loups et les pumas, 23&nbsp;m pour les autres animaux, bisons et wapitis compris). Ces r\u00e8gles prot\u00e8gent \u00e0 la fois la faune et les visiteurs.<\/p>\n<h3>La nature<\/h3>\n<p>Le parc de Yellowstone abrite l&#8217;un des plus <strong>grands \u00e9cosyst\u00e8mes temp\u00e9r\u00e9s<\/strong> encore intacts au monde, et donc une diversit\u00e9 naturelle unique au monde. La v\u00e9g\u00e9tation de Yellowstone est typique des <em><strong>Rocky Mountains<\/strong><\/em>, avec plus de 1&nbsp;000 esp\u00e8ces de plantes indig\u00e8nes, 9 conif\u00e8res diff\u00e9rents, et 3 esp\u00e8ces end\u00e9miques.<\/p>\n<h2 id=\"que-faire\" style=\"scroll-margin-top: 80px;\">Que faire \u00e0 Yellowstone ?<\/h2>\n<h3>Des randonn\u00e9es<\/h3>\n<p>Le parc est l&#8217;un des <strong>espaces naturels les plus vastes des \u00c9tats-Unis<\/strong>, avec plus de 2,2 millions d&#8217;acres de nature, et pr\u00e8s de 1&nbsp;800 kilom\u00e8tres de sentiers de randonn\u00e9e. Vous pouvez par exemple&nbsp;:<\/p>\n<ul>\n<li>Longer les geysers d&#8217;Old Faithful jusqu&#8217;\u00e0 Morning Glory Pool.<\/li>\n<li>Monter au point de vue sur Grand Prismatic Spring, et continuer jusqu&#8217;\u00e0 Fairy Falls (61&nbsp;m de haut, 2,6&nbsp;km du d\u00e9part).<\/li>\n<li>Marcher jusqu&#8217;\u00e0 des points de vue sur le canyon.<\/li>\n<li>Explorer des vall\u00e9es plus sauvages, en restant sur les sentiers balis\u00e9s.<\/li>\n<\/ul>\n<h3>Bateau et p\u00eache<\/h3>\n<p>Le parc de Yellowstone poss\u00e8de plusieurs <strong>lacs<\/strong>, et seuls 2 accueillent des bateaux \u00e0 moteur, <strong><em>Yellowstone Lake<\/em> et <em>Lewis Lake<\/em><\/strong>. Toute embarcation, m\u00eame un paddle, doit passer une inspection contre les esp\u00e8ces invasives et obtenir un permis. Environ 50&nbsp;000 visiteurs y viennent pour p\u00eacher tous les ans, et la p\u00eache fait partie des occupations phares du parc depuis plus de 100 ans. Il faut un permis du parc \u00e0 partir de 16 ans (40&nbsp;$ pour 3 jours, 55&nbsp;$ pour 7 jours, 75&nbsp;$ pour la saison)&nbsp;; les permis des \u00c9tats ne sont pas valables.<\/p>\n<h3>Du ski de fond et de la raquette<\/h3>\n<p>En hiver, une grande partie des routes est ferm\u00e9e aux v\u00e9hicules classiques, mais le parc se d\u00e9couvre en ski de fond, en raquettes, en motoneige ou en autoneige guid\u00e9es, du 15 d\u00e9cembre \u00e0 la mi-mars. Seuls l&#8217;Old Faithful Snow Lodge et le Mammoth Hot Springs Hotel restent ouverts. Les paysages enneig\u00e9s, la vapeur des geysers dans l&#8217;air glac\u00e9 et le silence en font une exp\u00e9rience tr\u00e8s diff\u00e9rente de l&#8217;\u00e9t\u00e9.<br \/>\n<div id=\"attachment_62268\" style=\"width: 820px\" class=\"wp-caption aligncenter\"><a href=\"https:\/\/frenchdistrict.com\/caraibes\/wp-content\/uploads\/sites\/16\/2025\/05\/weekend-visite-parc-naturel-yellowstone-wyoming-hiver-ski.jpg\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-62268\" class=\"wp-image-62268 size-large\" src=\"https:\/\/frenchdistrict.com\/caraibes\/wp-content\/uploads\/sites\/16\/2025\/05\/weekend-visite-parc-naturel-yellowstone-wyoming-hiver-ski-1024x683.jpg\" alt=\"Deux skieurs de fond sur une piste enneig\u00e9e, la vapeur d&#039;un geyser s&#039;\u00e9levant devant des arbres givr\u00e9s\" width=\"810\" height=\"540\" srcset=\"https:\/\/frenchdistrict.com\/caraibes\/wp-content\/uploads\/sites\/16\/2025\/05\/weekend-visite-parc-naturel-yellowstone-wyoming-hiver-ski-1024x683.jpg 1024w, https:\/\/frenchdistrict.com\/caraibes\/wp-content\/uploads\/sites\/16\/2025\/05\/weekend-visite-parc-naturel-yellowstone-wyoming-hiver-ski-300x200.jpg 300w, https:\/\/frenchdistrict.com\/caraibes\/wp-content\/uploads\/sites\/16\/2025\/05\/weekend-visite-parc-naturel-yellowstone-wyoming-hiver-ski-768x512.jpg 768w, https:\/\/frenchdistrict.com\/caraibes\/wp-content\/uploads\/sites\/16\/2025\/05\/weekend-visite-parc-naturel-yellowstone-wyoming-hiver-ski-1536x1024.jpg 1536w, https:\/\/frenchdistrict.com\/caraibes\/wp-content\/uploads\/sites\/16\/2025\/05\/weekend-visite-parc-naturel-yellowstone-wyoming-hiver-ski-810x540.jpg 810w, https:\/\/frenchdistrict.com\/caraibes\/wp-content\/uploads\/sites\/16\/2025\/05\/weekend-visite-parc-naturel-yellowstone-wyoming-hiver-ski-1140x760.jpg 1140w, https:\/\/frenchdistrict.com\/caraibes\/wp-content\/uploads\/sites\/16\/2025\/05\/weekend-visite-parc-naturel-yellowstone-wyoming-hiver-ski.jpg 1920w\" sizes=\"auto, (max-width: 810px) 100vw, 810px\" \/><\/a><p id=\"caption-attachment-62268\" class=\"wp-caption-text\">Du 15 d\u00e9cembre \u00e0 la mi-mars, le parc se d\u00e9couvre \u00e0 ski, en raquettes, en motoneige ou en autoneige guid\u00e9es.<\/p><\/div>\n<h3>De l&#8217;\u00e9quitation<\/h3>\n<p>Il est possible de partir en <strong>balade \u00e0 cheval<\/strong> pendant 1 ou 2 heures au d\u00e9part du corral de Roosevelt, au nord-est du parc, de d\u00e9but juin \u00e0 d\u00e9but septembre. Le soir, l&#8217;Old West Dinner Cookout emm\u00e8ne les cavaliers, et les non-cavaliers en chariot b\u00e2ch\u00e9 ou en diligence, jusqu&#8217;\u00e0 un d\u00eener de steak en pleine prairie.<br \/>\n<div id=\"attachment_62273\" style=\"width: 820px\" class=\"wp-caption aligncenter\"><a href=\"https:\/\/frenchdistrict.com\/caraibes\/wp-content\/uploads\/sites\/16\/2025\/05\/weekend-visite-parc-naturel-yellowstone-wyoming-02.jpg\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-62273\" class=\"wp-image-62273 size-large\" src=\"https:\/\/frenchdistrict.com\/caraibes\/wp-content\/uploads\/sites\/16\/2025\/05\/weekend-visite-parc-naturel-yellowstone-wyoming-02-1024x702.jpg\" alt=\"Une cavali\u00e8re en selle sur un cheval bai\" width=\"810\" height=\"555\" srcset=\"https:\/\/frenchdistrict.com\/caraibes\/wp-content\/uploads\/sites\/16\/2025\/05\/weekend-visite-parc-naturel-yellowstone-wyoming-02-1024x702.jpg 1024w, https:\/\/frenchdistrict.com\/caraibes\/wp-content\/uploads\/sites\/16\/2025\/05\/weekend-visite-parc-naturel-yellowstone-wyoming-02-300x206.jpg 300w, https:\/\/frenchdistrict.com\/caraibes\/wp-content\/uploads\/sites\/16\/2025\/05\/weekend-visite-parc-naturel-yellowstone-wyoming-02-768x526.jpg 768w, https:\/\/frenchdistrict.com\/caraibes\/wp-content\/uploads\/sites\/16\/2025\/05\/weekend-visite-parc-naturel-yellowstone-wyoming-02-1536x1053.jpg 1536w, https:\/\/frenchdistrict.com\/caraibes\/wp-content\/uploads\/sites\/16\/2025\/05\/weekend-visite-parc-naturel-yellowstone-wyoming-02-810x555.jpg 810w, https:\/\/frenchdistrict.com\/caraibes\/wp-content\/uploads\/sites\/16\/2025\/05\/weekend-visite-parc-naturel-yellowstone-wyoming-02-1140x781.jpg 1140w, https:\/\/frenchdistrict.com\/caraibes\/wp-content\/uploads\/sites\/16\/2025\/05\/weekend-visite-parc-naturel-yellowstone-wyoming-02-145x100.jpg 145w, https:\/\/frenchdistrict.com\/caraibes\/wp-content\/uploads\/sites\/16\/2025\/05\/weekend-visite-parc-naturel-yellowstone-wyoming-02-380x260.jpg 380w, https:\/\/frenchdistrict.com\/caraibes\/wp-content\/uploads\/sites\/16\/2025\/05\/weekend-visite-parc-naturel-yellowstone-wyoming-02.jpg 1920w\" sizes=\"auto, (max-width: 810px) 100vw, 810px\" \/><\/a><p id=\"caption-attachment-62273\" class=\"wp-caption-text\">Balades d&#8217;une ou deux heures au d\u00e9part du corral de Roosevelt, de d\u00e9but juin \u00e0 d\u00e9but septembre.<\/p><\/div>\n<h2 id=\"insolite\" style=\"scroll-margin-top: 80px;\">Quelques faits insolites et int\u00e9ressants sur le parc national de Yellowstone<\/h2>\n<h3>Premier parc national au monde<\/h3>\n<p>Yellowstone a \u00e9t\u00e9 cr\u00e9\u00e9 le 1<sup>er<\/sup> mars <strong>1872<\/strong>, ce qui en fait le tout premier parc national au monde. Cette initiative a inspir\u00e9 de nombreux autres pays \u00e0 cr\u00e9er leurs propres parcs nationaux.<\/p>\n<h3>Supervolcan<\/h3>\n<p>Yellowstone est situ\u00e9 au-dessus d&#8217;un supervolcan actif. <a href=\"https:\/\/fr.wikipedia.org\/wiki\/Caldeira_de_Yellowstone\" target=\"_blank\" rel=\"noopener\"><strong>La caldeira de Yellowstone<\/strong><\/a>, une immense d\u00e9pression form\u00e9e par l&#8217;effondrement du sol apr\u00e8s l&#8217;\u00e9ruption d&#8217;il y a 631&nbsp;000 ans, mesure environ 48&nbsp;km sur 72&nbsp;km. Le sol y tremble de 1&nbsp;000 \u00e0 3&nbsp;000 fois par an, presque toujours sans qu&#8217;on le sente. Selon le NPS, une nouvelle \u00e9ruption de cette taille est tr\u00e8s improbable dans les 1&nbsp;000, voire les 10&nbsp;000 prochaines ann\u00e9es.<\/p>\n<h3>Micro-organismes extr\u00eamophiles<\/h3>\n<p>Les sources chaudes et les geysers de Yellowstone abritent des micro-organismes extr\u00eamophiles, capables de survivre dans des conditions extr\u00eames de temp\u00e9rature et d&#8217;acidit\u00e9. L&#8217;un d&#8217;eux, <em>Thermus aquaticus<\/em>, d\u00e9couvert pr\u00e8s de Fountain Paint Pot, a permis de mettre au point la PCR, la technique qui copie l&#8217;ADN, utilis\u00e9e aussi bien par la recherche m\u00e9dicale que pour les tests de d\u00e9pistage.<br \/>\n<div id=\"attachment_68959\" style=\"width: 820px\" class=\"wp-caption aligncenter\"><a href=\"https:\/\/frenchdistrict.com\/caraibes\/wp-content\/uploads\/sites\/16\/2026\/11\/yellowstone-bacteries-thermophiles.jpg\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-68959\" class=\"wp-image-68959 size-large\" src=\"https:\/\/frenchdistrict.com\/caraibes\/wp-content\/uploads\/sites\/16\/2026\/11\/yellowstone-bacteries-thermophiles-1024x682.jpg\" alt=\"Une source sombre bord\u00e9e de d\u00e9p\u00f4ts orange vif et jaunes, sur un sol blanc de silice\" width=\"810\" height=\"539\" srcset=\"https:\/\/frenchdistrict.com\/caraibes\/wp-content\/uploads\/sites\/16\/2026\/11\/yellowstone-bacteries-thermophiles-1024x682.jpg 1024w, https:\/\/frenchdistrict.com\/caraibes\/wp-content\/uploads\/sites\/16\/2026\/11\/yellowstone-bacteries-thermophiles-300x200.jpg 300w, https:\/\/frenchdistrict.com\/caraibes\/wp-content\/uploads\/sites\/16\/2026\/11\/yellowstone-bacteries-thermophiles-768x512.jpg 768w, https:\/\/frenchdistrict.com\/caraibes\/wp-content\/uploads\/sites\/16\/2026\/11\/yellowstone-bacteries-thermophiles-1536x1024.jpg 1536w, https:\/\/frenchdistrict.com\/caraibes\/wp-content\/uploads\/sites\/16\/2026\/11\/yellowstone-bacteries-thermophiles-810x540.jpg 810w, https:\/\/frenchdistrict.com\/caraibes\/wp-content\/uploads\/sites\/16\/2026\/11\/yellowstone-bacteries-thermophiles-1140x760.jpg 1140w, https:\/\/frenchdistrict.com\/caraibes\/wp-content\/uploads\/sites\/16\/2026\/11\/yellowstone-bacteries-thermophiles.jpg 2000w\" sizes=\"auto, (max-width: 810px) 100vw, 810px\" \/><\/a><p id=\"caption-attachment-68959\" class=\"wp-caption-text\">Les couleurs vives des sources viennent des micro-organismes thermophiles, ici dans l&#8217;Upper Geyser Basin. <span style=\"font-size: 12px; font-style: italic;\">Cr\u00e9dit photo : Ben B. \/ French District<\/span><\/p><\/div>\n<h3>Le <em>Continental Divide<\/em><\/h3>\n<p>Le parc est travers\u00e9 par la ligne de partage des eaux continentale, qui s\u00e9pare les bassins versants de l&#8217;oc\u00e9an Pacifique et de l&#8217;oc\u00e9an Atlantique. Entre l&#8217;entr\u00e9e sud et Old Faithful, la route la franchit trois fois, jusqu&#8217;\u00e0 Craig Pass, \u00e0 2&nbsp;518&nbsp;m.<\/p>\n<h3>Une pr\u00e9sence humaine tr\u00e8s ancienne<\/h3>\n<p>Yellowstone abrite plus de 1&nbsp;800 sites arch\u00e9ologiques connus, qui t\u00e9moignent de la pr\u00e9sence humaine dans la r\u00e9gion depuis plus de 11&nbsp;000 ans. 27 tribus am\u00e9rindiennes ont une longue histoire de connexion avec le parc.<\/p>\n<h3>Incendies naturels<\/h3>\n<p>Les incendies de for\u00eat sont une partie naturelle de l&#8217;\u00e9cosyst\u00e8me de Yellowstone. En 1988, des <a href=\"https:\/\/fr.wikipedia.org\/wiki\/Incendies_de_1988_%C3%A0_Yellowstone\" target=\"_blank\" rel=\"noopener\">incendies massifs<\/a> ont touch\u00e9 36&nbsp;% du parc, mais ils ont \u00e9galement jou\u00e9 un r\u00f4le crucial dans le renouvellement de la for\u00eat et la r\u00e9g\u00e9n\u00e9ration de la vie v\u00e9g\u00e9tale.<br \/>\n<div id=\"attachment_62269\" style=\"width: 820px\" class=\"wp-caption aligncenter\"><a href=\"https:\/\/frenchdistrict.com\/caraibes\/wp-content\/uploads\/sites\/16\/2025\/05\/weekend-visite-parc-naturel-yellowstone-wyoming-feux-1988.jpg\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-62269\" class=\"wp-image-62269 size-large\" src=\"https:\/\/frenchdistrict.com\/caraibes\/wp-content\/uploads\/sites\/16\/2025\/05\/weekend-visite-parc-naturel-yellowstone-wyoming-feux-1988-1024x679.jpg\" alt=\"Une for\u00eat de pins en flammes derri\u00e8re un panneau indiquant Grant Village\" width=\"810\" height=\"537\" srcset=\"https:\/\/frenchdistrict.com\/caraibes\/wp-content\/uploads\/sites\/16\/2025\/05\/weekend-visite-parc-naturel-yellowstone-wyoming-feux-1988-1024x679.jpg 1024w, https:\/\/frenchdistrict.com\/caraibes\/wp-content\/uploads\/sites\/16\/2025\/05\/weekend-visite-parc-naturel-yellowstone-wyoming-feux-1988-300x199.jpg 300w, https:\/\/frenchdistrict.com\/caraibes\/wp-content\/uploads\/sites\/16\/2025\/05\/weekend-visite-parc-naturel-yellowstone-wyoming-feux-1988-768x510.jpg 768w, https:\/\/frenchdistrict.com\/caraibes\/wp-content\/uploads\/sites\/16\/2025\/05\/weekend-visite-parc-naturel-yellowstone-wyoming-feux-1988-1536x1019.jpg 1536w, https:\/\/frenchdistrict.com\/caraibes\/wp-content\/uploads\/sites\/16\/2025\/05\/weekend-visite-parc-naturel-yellowstone-wyoming-feux-1988-810x537.jpg 810w, https:\/\/frenchdistrict.com\/caraibes\/wp-content\/uploads\/sites\/16\/2025\/05\/weekend-visite-parc-naturel-yellowstone-wyoming-feux-1988-1140x756.jpg 1140w, https:\/\/frenchdistrict.com\/caraibes\/wp-content\/uploads\/sites\/16\/2025\/05\/weekend-visite-parc-naturel-yellowstone-wyoming-feux-1988.jpg 1920w\" sizes=\"auto, (max-width: 810px) 100vw, 810px\" \/><\/a><p id=\"caption-attachment-62269\" class=\"wp-caption-text\">Incendie de for\u00eat \u00e0 Grant Village, le 23 juillet 1988. <span style=\"font-size: 12px; font-style: italic;\">Cr\u00e9dit photo : <a style=\"color: #3d5185; text-decoration: none;\" href=\"https:\/\/commons.wikimedia.org\/w\/index.php?title=File:Ground_fire_at_Grant_Village_2.jpg\" target=\"_blank\" rel=\"noopener\">Jeff Henry \/ National Park Service<\/a> (domaine public)<\/span><\/p><\/div>\n<h3>Observatoire volcanique<\/h3>\n<p>Le <em><a href=\"https:\/\/www.usgs.gov\/observatories\/yvo\" target=\"_blank\" rel=\"noopener\"><strong>Yellowstone Volcano Observatory<\/strong> <\/a><\/em>(YVO), cr\u00e9\u00e9 en 2001, r\u00e9unit l&#8217;USGS, le parc national de Yellowstone, des universit\u00e9s et les services g\u00e9ologiques du Wyoming, du Montana et de l&#8217;Idaho. Il surveille l&#8217;activit\u00e9 volcanique, sismique et hydrothermale dans la r\u00e9gion pour assurer la s\u00e9curit\u00e9 des visiteurs et des r\u00e9sidents.<\/p>\n<h2 id=\"quand-partir\" style=\"scroll-margin-top: 80px;\">Quand partir \u00e0 Yellowstone ?<\/h2>\n<p>\u00c0 Old Faithful, \u00e0 2&nbsp;240&nbsp;m d&#8217;altitude, il g\u00e8le encore la nuit en juin et en septembre, et il tombe environ 5&nbsp;m de neige par an. M\u00eame en juillet, emportez une polaire pour le matin.<\/p>\n<figure id=\"attachment_177151\" aria-describedby=\"caption-attachment-177151\" style=\"width: 750px\" class=\"wp-caption aligncenter\" itemscope itemtype=\"https:\/\/schema.org\/ImageObject\"><a href=\"https:\/\/frenchdistrict.com\/caraibes\/wp-content\/uploads\/sites\/16\/2026\/11\/yellowstone-quand-partir-climat.png\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-68958 size-full\" src=\"https:\/\/frenchdistrict.com\/caraibes\/wp-content\/uploads\/sites\/16\/2026\/11\/yellowstone-quand-partir-climat.png\" alt=\"Infographie : temp\u00e9ratures moyennes \u00e0 Old Faithful mois par mois, en bande entre la nuit et l&#039;apr\u00e8s-midi, de -2 \u00b0C l&#039;apr\u00e8s-midi et -17 \u00b0C la nuit en janvier \u00e0 24 \u00b0C l&#039;apr\u00e8s-midi et 4 \u00b0C la nuit en juillet ; nuits sous 0 \u00b0C de septembre \u00e0 mai. Dessous, la neige mois par mois (5 m par an, 114 cm en d\u00e9cembre) et une frise : toutes les routes ouvertes de juin \u00e0 septembre, ouverture progressive en avril et mai, fermeture en octobre, parc ferm\u00e9 aux voitures en novembre, hiver guid\u00e9 de mi-d\u00e9cembre \u00e0 mi-mars.\" width=\"750\" height=\"1000\" itemprop=\"contentUrl\" srcset=\"https:\/\/frenchdistrict.com\/caraibes\/wp-content\/uploads\/sites\/16\/2026\/11\/yellowstone-quand-partir-climat.png 1500w, https:\/\/frenchdistrict.com\/caraibes\/wp-content\/uploads\/sites\/16\/2026\/11\/yellowstone-quand-partir-climat-225x300.png 225w, https:\/\/frenchdistrict.com\/caraibes\/wp-content\/uploads\/sites\/16\/2026\/11\/yellowstone-quand-partir-climat-768x1024.png 768w, https:\/\/frenchdistrict.com\/caraibes\/wp-content\/uploads\/sites\/16\/2026\/11\/yellowstone-quand-partir-climat-1152x1536.png 1152w, https:\/\/frenchdistrict.com\/caraibes\/wp-content\/uploads\/sites\/16\/2026\/11\/yellowstone-quand-partir-climat-810x1080.png 810w, https:\/\/frenchdistrict.com\/caraibes\/wp-content\/uploads\/sites\/16\/2026\/11\/yellowstone-quand-partir-climat-1140x1520.png 1140w\" sizes=\"auto, (max-width: 750px) 100vw, 750px\" \/><\/a><meta itemprop=\"name\" content=\"Quand partir \u00e0 Yellowstone\" \/><meta itemprop=\"license\" content=\"https:\/\/creativecommons.org\/licenses\/by-nc-sa\/4.0\/\" \/><meta itemprop=\"acquireLicensePage\" content=\"https:\/\/frenchdistrict.com\/californie-nord\/articles\/weekend-visite-parc-naturel-yellowstone-wyoming\/\" \/><meta itemprop=\"creditText\" content=\"French District\" \/><meta itemprop=\"copyrightNotice\" content=\"\u00a9 French District, CC BY-NC-SA 4.0\" \/><span itemprop=\"creator\" itemscope itemtype=\"https:\/\/schema.org\/Organization\"><meta itemprop=\"name\" content=\"French District\" \/><meta itemprop=\"url\" content=\"https:\/\/frenchdistrict.com\/\" \/><\/span><figcaption id=\"caption-attachment-177151\" class=\"wp-caption-text\" itemprop=\"caption\">Quand partir \u00e0 Yellowstone : toutes les routes ouvertes de juin \u00e0 septembre ; \u00e0 Old Faithful, des nuits proches du gel m\u00eame en \u00e9t\u00e9 et 5 m de neige par an (normales NOAA 1991-2020). Infographie French District, licence CC BY-NC-SA 4.0.<\/figcaption><\/figure>\n<table class=\"fd-table\">\n<thead>\n<tr>\n<th>Saison<\/th>\n<th>M\u00e9t\u00e9o &amp; acc\u00e8s<\/th>\n<th>Avantages<\/th>\n<th>Attention<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td><strong>Printemps (mi-avril \u00e0 mai)<\/strong><\/td>\n<td>Neige possible, routes qui ouvrent par \u00e9tapes du 16 avril au 28 mai<\/td>\n<td>Faune active, moins de monde<\/td>\n<td>M\u00e9t\u00e9o instable, certaines zones encore ferm\u00e9es<\/td>\n<\/tr>\n<tr>\n<td><strong>\u00c9t\u00e9 (juin \u00e0 ao\u00fbt)<\/strong><\/td>\n<td>Routes ouvertes, journ\u00e9es douces, nuits fra\u00eeches<\/td>\n<td>Journ\u00e9es longues, acc\u00e8s facile \u00e0 la plupart des sites<\/td>\n<td>Forte fr\u00e9quentation, h\u00e9bergements \u00e0 r\u00e9server tr\u00e8s t\u00f4t<\/td>\n<\/tr>\n<tr>\n<td><strong>Automne (septembre-octobre)<\/strong><\/td>\n<td>Temps frais, premi\u00e8res neiges en octobre<\/td>\n<td>Ambiance plus calme, faune visible<\/td>\n<td>Fermetures progressives de services et campings, routes ferm\u00e9es d\u00e9but novembre<\/td>\n<\/tr>\n<tr>\n<td><strong>Hiver (15 d\u00e9cembre \u00e0 mi-mars)<\/strong><\/td>\n<td>Neige, routes ferm\u00e9es aux voitures sauf au nord<\/td>\n<td>Paysages uniques, activit\u00e9s neige<\/td>\n<td>Motoneige ou autoneige guid\u00e9es seulement, logistique plus co\u00fbteuse<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>Entre ces saisons, de d\u00e9but novembre \u00e0 mi-d\u00e9cembre et de mi-mars \u00e0 mi-avril, presque tout le parc est ferm\u00e9, sauf la route du nord.<br \/>\n<div style=\"display:block;\"><h3>Infos Pratiques <\/h3><div class=\"infos-listing\" itemscope itemtype=\"https:\/\/schema.org\/Thing\"><div class=\"article-info address infos-listing__address\" style=\"padding-bottom:1em;\" itemprop=\"location\" itemscope itemtype=\"https:\/\/schema.org\/Place\"><strong itemprop=\"name\"><i class=\"fa fa-map-marker\" aria-hidden=\"true\"><\/i>Yellowstone National Park<\/strong><br><div itemprop=\"address\" itemscope itemtype=\"https:\/\/schema.org\/PostalAddress\"><span itemprop=\"streetAddress\">Yellowstone National Park<\/span>,\r\n\t\t\t\t\t\t<span itemprop=\"addressRegion\"> WY<\/span>, <span itemprop=\"postalCode\">82190<\/span><\/div>\r\n\t\t\t\t<\/div><div class=\"article-info infos-listing__contact\"><a href=\"tel:(307) 344-7381\" target=\"_blank\"><i class=\"fa fa-phone\" aria-hidden=\"true\"><\/i>(307) 344-7381<\/a><br><a href=\"https:\/\/www.nps.gov\/yell\/index.htm\" target=\"_blank\"><i class=\"fa fa-link\" aria-hidden=\"true\"><\/i>Nps.gov<\/a><br><\/div><div class=\"infos-listing__socials marg-v--base\"><a class=\"icon-facebook\" href=\"https:\/\/www.facebook.com\/YellowstoneNPS\" title=\"Facebook\" target=\"_blank\"><i class=\"fa fa-facebook\" aria-hidden=\"true\"><\/i><\/a><a class=\"icon-twitter\" href=\"https:\/\/twitter.com\/YellowstoneNPS\" target=\"_blank\" title=\"Twitter\"><i class=\"fa fa-twitter\" aria-hidden=\"true\"><\/i><\/a><a class=\"icon-instagram\" href=\"https:\/\/www.instagram.com\/yellowstonenps\/\" target=\"_blank\" title=\"Instagram\"><i class=\"fa fa-instagram\" aria-hidden=\"true\"><\/i><\/a><a class=\"icon-youtube\" href=\"https:\/\/www.youtube.com\/user\/YellowstoneNPS\" target=\"_blank\" title=\"Youtube\"><i class=\"fa fa-youtube-play\" aria-hidden=\"true\"><\/i><\/a><\/div><\/div>\r\n\t\t<\/div>\r\n\t\t<div class=\"clear\"><\/div>\n<iframe loading=\"lazy\" title=\"Video Embed\" src=\"https:\/\/www.nps.gov\/media\/video\/embed.htm?id=A35E7E79-CDF6-74D8-26332556B9F2D5E2\" width=\"750\" height=\"478\" frameborder=\"0\" scrolling=\"auto\" allowfullscreen=\"allowfullscreen\"><\/iframe><\/p>\n<h3>Vous avez une question ?<br \/>\n\u00c9crivez-nous !<\/h3>\n<p><span style=\"font-weight: 400;\"><a name=\"contactfd\" style=\"display: block;position: relative;top: -150px;visibility: hidden;\"><\/a><script type=\"text\/javascript\">\n\/* <![CDATA[ *\/\nvar 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