A 17-year-old tourist visiting Lone Star Geyser in Yellowstone National Park suffered significant burns to his foot and ankle after breaking through the crust of the thermal pool. This marks the first reported thermal injury in Yellowstone in 2025.

On Monday morning, a 17-year-old male suffered what Yellowstone National Park officials say are “significant thermal burns” to his foot and ankle area in the vicinity of Lone Star Geyser near Old Faithful.

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.