YELLOWSTONE NATIONAL PARK, Wyo. — A Utah woman was burned in Yellowstone National Park after stepping into a previously unknown hot pool.

Park officials say Jeanette Hogan had burns on one of her ankles and lower leg after the incident Thursday in the Artists' Paintpots area, about 2 1/2 miles south of Norris Junction.

Hogan was hiking on an established dirt trail with family members when she stepped in a rainwater puddle along the trail's edge. The crust gave way to a hot pool beneath.

Park geologists say the water was about 171 degrees Fahrenheit.

Hogan was taken to Eastern Idaho Regional Medical Center in Idaho Falls, where a spokeswoman says she was treated and released. Her age and hometown weren't immediately available.

The Artists' Paintpots area in the park has been temporarily closed.