The teenager, a 17-year-old boy, was hiking on Monday in the thermal area near the Lone Star Geyser, which is in the same geyser basin as Old Faithful, when his foot broke through the crust, causing “significant thermal burns to his foot and ankle area,” the park service said in a statement.

A 17-year-old boy burned his foot after accidentally stepping into a thermal pool in Yellowstone National Park on Monday. The boy, whose name wasn't published, stepped through a thin crust while hiking around Lone Star Geyser,

A 17-year-old boy visiting Yellowstone National Park was seriously burned after he stepped on a piece of land near a geyser and his foot broke through the ground’s thin crust, causing “significant” injury to his foot and ankle.