The geothermal areas of Yellowstone include several geyser basins in Yellowstone National Park as well as other geothermal features such as hot springs, mud pots and fumaroles. In total, the number of thermal features in Yellowstone is estimated at 10,000 and 200 to 250 geysers erupt in Yellowstone each year, making it the place with the highest concentration of active geysers in the world, thanks to its location in an ancient caldera.

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  • The geothermal areas of Yellowstone include several geyser basins in Yellowstone National Park as well as other geothermal features such as hot springs, mud pots and fumaroles. In total, the number of thermal features in Yellowstone is estimated at 10,000 and 200 to 250 geysers erupt in Yellowstone each year, making it the place with the highest concentration of active geysers in the world, thanks to its location in an ancient caldera. Many of these features build up sinter, geyserite or travertine deposits around and within them. The various geyser basins are located where rainwater and snowmelt can easily percolate into the ground, get indirectly superheated by the underlying Yellowstone hotspot, and then easily erupt at the surface as geysers, hot springs, and fumaroles. Thus flat-bottomed valleys between ancient lava flows and glacial moraines are where most of the large geothermal areas are located. Smaller geothermal areas can be found where fault lines reach the surface, in places along the circular fracture zone around the caldera and at the base of slopes that collect excess groundwater. Because of the high elevation of the Yellowstone Plateau, the average boiling temperature at Yellowstone's geyser basins is 199 °F (93 °C). When properly confined and close to the surface it can periodically release some of the built-up pressure in eruptions of hot water and steam that can reach up to 390 feet (120 m) into the air (see Steamboat Geyser, the world’s tallest geyser). Water erupting from Yellowstone's geysers is superheated above that boiling point to an average of 204 °F (95.5 °C) as it leaves the vent. The water cools significantly while airborne and is no longer scalding hot by the time it strikes the ground, nearby boardwalks, or even spectators. However, because of the high temperatures of the water in the features, it is important that spectators remain on the boardwalks and designated trails. Several deaths have occurred in the park as a result of falls into hot springs. Prehistoric Native American artifacts have been found at Mammoth Hot Springs and other geothermal areas in Yellowstone. Some accounts state that the early people used hot water from the geothermal features for bathing and cooking. In the 19th century, Father Pierre-Jean De Smet reported that natives he interviewed thought that geyser eruptions were "the result of combat between the infernal spirits. " The Lewis and Clark Expedition traveled north of the Yellowstone area in 1806. Local natives that they came upon seldom dared to enter what we now know is the caldera because of frequent loud noises that sounded like thunder and the belief that the spirits that possessed the area did not like human intrusion into their realm. The first Caucasian known to travel into the caldera and see the geothermal features was John Colter, who had left the Lewis and Clark Expedition. He described what he saw as "hot spring brimstone. " Beaver trapper Joseph Meek recounted in 1830 that the steam rising from the various geyser basins reminded him of smoke coming from industrial smokestacks on a cold winter morning in Pittsburgh, Pennsylvania. In the 1850s, famed trapper Jim Bridger called it "the place where Hell bubbled up.".
  • Mammoth Hot Springs ist der Haupt- und Verwaltungsort des Yellowstone-Nationalparkes in den USA. Seinen Namen verdankt er den nahegelegenen Sinter-Terrassen und heißen Quellen. Er liegt auf 1902 m. ü.M. Nebst den Verwaltungsgebäuden besteht die Ortschaft lediglich aus einem Restaurant, einem Hotel, einem Souvenirladen, einer Tankstelle, einer Kapelle, einem Postbüro sowie aus einigen Häusern und Hütten für Angestellte und Touristen.
  • Les Mammoth Hot Springs sont un édifice mineral calcaire naturel de type tufière se trouvant dans le Parc national de Yellowstone aux États-Unis.
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  • Maps of the Geyser Basins
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  • 150 (xsd:integer)
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  • The geothermal areas of Yellowstone include several geyser basins in Yellowstone National Park as well as other geothermal features such as hot springs, mud pots and fumaroles. In total, the number of thermal features in Yellowstone is estimated at 10,000 and 200 to 250 geysers erupt in Yellowstone each year, making it the place with the highest concentration of active geysers in the world, thanks to its location in an ancient caldera.
  • Mammoth Hot Springs ist der Haupt- und Verwaltungsort des Yellowstone-Nationalparkes in den USA. Seinen Namen verdankt er den nahegelegenen Sinter-Terrassen und heißen Quellen. Er liegt auf 1902 m. ü.M. Nebst den Verwaltungsgebäuden besteht die Ortschaft lediglich aus einem Restaurant, einem Hotel, einem Souvenirladen, einer Tankstelle, einer Kapelle, einem Postbüro sowie aus einigen Häusern und Hütten für Angestellte und Touristen.
  • Les Mammoth Hot Springs sont un édifice mineral calcaire naturel de type tufière se trouvant dans le Parc national de Yellowstone aux États-Unis.
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  • Geothermal areas of Yellowstone
  • Mammoth Hot Springs
  • Mammoth Hot Springs
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