Editorial photo #3025676 Human Interest
Mammoth Hot Springs
Mammoth Hot Springs is seen in Yellowstone National Park, Park County, Wyoming, United States on July 10, 2018. It is composed of a large system of hot springs on a hill of travertine. It was created over thousands of years from hot water from the spring that cooled and deposited calcium carbonate. (Photo by Patrick Gorski/NurPhoto)