More geological changes are occurring at Yellowstone National Park, as another hole forms in one of the park's basins.The ...

YELLOWSTONE NATIONAL PARK (AP) - Steamboat geyser erupted for the fourth time in just over a year, prompting new questions about increased activity for the world's biggest geyser.

Yellowstone National Park, renowned for its geothermal features and volcanic history, is beginning to show signs of renewed ...

Explore one of the hottest springs in the U.S. at Yellowstone's vibrant basin, home to the once-largest geyser in the world and a 370-foot ecological marvel.

Get ready for a little Christmas in July: There’s a new baby blue pool in Yellowstone National Park, and science suggests it started forming on the winter holiday.

Yellowstone's Upper Geyser Basin plays host to Old Faithful along with about 300 other active ... Upper Geyser Basin is known as "the largest concentration of geysers in the world," the Park ...