Wyoming, United States. Yellowstone National Park. Mammoth Hot Springs. Large complex of hot springs on a hill of travertine. It was created over thousands of years as hot water from the spring cooled and deposited calcium carbonate.
Wyoming, United States. Yellowstone National Park. Mammoth Hot Springs. Large complex of hot springs on a hill of travertine. It was created over thousands of years as hot water from the spring cooled and deposited calcium carbonate.