MTPR

Geyser Hill

Yellowstone National Park's Upper Geyser Basin in June of 2006.
Yellowstone National Park

Last week, Yellowstone National Park saw thermal activity that hasn't been recorded in the area in decades.

Yellowstone Park's Ear Spring erupts, September 15, 2018.
Yellowstone National Park

Yellowstone National Park is reporting new thermal activity, including a rare eruption of Ear Spring.

The activity is in Upper Geyser Basin, on the other side of the Firehole River from Old Faithful.