Yellowstone National Park, Wyoming, USA. Soda Butte mound. This travertine (calcium carbonate) mound was formed more than a century ago by a hot spr

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Yellowstone National Park, Wyoming, USA. Soda Butte mound. This travertine (calcium carbonate) mound was formed more than a century ago by a hot spring. Only small amounts of hydrothermal water and hydrogen sulfide gas currently flow from this once more prolific spring.

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Size: 5184px × 3456px
Location: Yellowstone National Park, Wyoming, USA
Photo credit: © Janet Horton / Alamy / Afripics
License: Royalty Free
Model Released: No

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