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- Address: Grand Loop Road, Yellowstone National Park, Wyoming, USA
- Admission: $30 entrance fee to Yellowstone National Park
Even though Mammoth Hot Springs are outside of Yellowstone’s caldera valley, the sheer amount of volcanic energy has spilled through porous, subterranean passageways to Yellowstone’s northwestern corner. Here, at Mammoth Hot Springs, the geothermally-heated water emerges through cracks and fissures, and unlike the deep, hot spring pools found elsewhere inside of the park, the formations here are terraced travertine and dripping in mineral formations. When visiting Mammoth Hot Springs in Yellowstone, take a stroll on the network of boardwalks that weaves through the steam filled landscape. There are dozens of individually named formations in the Mammoth Hot Springs complex, and despite the exceptionally high temperature of the pools, it’s common to find wildlife such as elk or deer walking casually amidst the steam. In winter, the sight of snow mixing in with the steam and the white of the calcium carbonate, creates a scene that looks like the surface of a completely other planet. While it doesn’t take long to visit the hot springs—as the boardwalks are relatively short—the bubbling formations and yellowish terraces are a highlight of visiting the park.
The Mammoth Hot Springs are located in the northwestern corner of Yellowstone National Park, approximately five minutes from the Montana border, and a half-mile from Mammoth village. The terraces are divided into two different areas, with the lower terrace having the greatest amount of steaming mineral formations.