Family Activities:

Mammoth Hot Springs

Attraction

Mammoth Hot Springs

Upper Loop Road, Yellowstone National Park, 82190

After the acidic hot springs’ waters pass through the limestone, calcium carbonate remains, eventually causing the unusual shaped terraces that you see. We think the springs look even more dramatic in winter when the steaming waters melt the surrounding snow. The Mammoth Hot Springs Hotel and part of Mammoth Hot Springs remain open year-round.