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.

Officials at Yellowstone National Park say that a 17-year-old male sustained "significant thermal burns" to his foot and ankle area

Officials said a 17-year-old male sustained “significant” thermal burns to his foot and ankle area while hiking in Yellowstone National Park earlier this week.