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 hiker has suffered significant burns while walking in a thermal area of Yellowstone National Park. According to a news release by the National Park Service, the unidentified male hiker was in the vicinity of Lone Star Geyser near Old Faithful on the morning of Monday, July 28, when the incident occurred.

YELLOWSTONE NATIONAL PARK, Wyo. — Park rangers are reminding Yellowstone National Park visitors to remain on all boardwalks and designated trails after a teenager suffered "significant" thermal burns to his foot and ankle near a popular geyser. A teenager suffered significant thermal burns near Lone Star Geyser in Yellowstone.