“For hundreds of years, Shoshone and Bannock people collected minerals from Mammoth Hot Springs for white paint. These minerals contribute to the beautiful terrace structures, along with heat, a natural “plumbing” system, water, and limestone.
The volcanic heat source for Mammoth Hot Springs remains somewhat of a mystery. Scientists have proposed two sources, including the large magma chamber underlying the Yellowstone Caldera, or perhaps a smaller heat source closer to Mammoth.”
Click here for virtual field trip – https://www.nps.gov/thingstodo/yell-mammoth-hot-springs-trails.htm