Nick Garbutt / American bison (Bison bison) female covered in hoar frost near hot spring, portrait. Midway Geyser Basin, Yellowstone National Park, USA. February.
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Ingo Arndt / Burned trees in front of Grand Prismatic Spring, Midway Geyser Basin, Yellowstone National Park, Wyoming, USA, September 2011.
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Ingo Arndt / Grand Prismatic Spring, Midway Geyser Basin, Yellowstone National Park, Wyoming, USA, September 2011.
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Jeff Vanuga / Aerial view of Grand Prismatic Springs Midway Geyser Basin. Yellowstone National Park, Wyoming, July 2011.
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Tim Fitzharris / Tourists viewing Grand Prismatic Pool, Midway Geyser Basin, Yellowstone National Park, Wyoming
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Jim Brandenburg / Aerial view of Grand Prismatic Pool in winter, Midway Geyser Basin, Yellowstone National Park, Wyoming
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Hermann Brehm / Grand Prismatic Spring in Midway Geyser Basin, Yellowstone NP, Wyoming, USA.
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Nick Garbutt / American bison (Bison bison), two females covered in hoar frost near hot spring, portrait. Midway Geyser Basin, Yellowstone National Park, USA. February.
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Nick Garbutt / American bison (Bison bison), two females covered in hoar frost near hot spring, conifers in background. Midway Geyser Basin, Yellowstone National Park, USA. February.
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Nick Garbutt / Steam rising from Grand Prismatic thermal pool in snow covered landscape. Midway Geyser Basin, Yellowstone National Park, USA. February 2019.
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Jeff Foott / Grand Prismatic Spring, Midway Geyser Basin, Yellowstone National Park, Wyoming
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Ingo Arndt / Grand Prismatic Spring, Midway Geyser Basin, Yellowstone National Park, Wyoming, USA, September 2011
