Thermophiles lining runoff from geysers in the distance of the Upper Geyser Basin. Yellowstone National Park, Wyoming

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Photo credit: © Mike Cavaroc / Alamy / Afripics
License: Licensed
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Keywords: america, basin, ecosystem, geyser, greater, hot, landscape, national, nature, north, outdoors, park, scenic, spring, thermophiles, upper, water, western, wyoming, yellowstone