Mammoth Hot Springs, Hot springs in Wyoming, USA.
Mammoth Hot Springs is a large complex of hot springs on a hill of travertine in Yellowstone National Park.
It was created over thousands of years as hot water from the spring cooled and deposited calcium carbonate.
The Mammoth Hot Springs are associated with Native American legends and folklore.
Travellers can view the springs along boardwalks.
Its complex terracing is not found anywhere else in the world.
Location: Wyoming
Sources: Wikimedia, OpenStreetMap