A tourist ventured too close to one of the most iconic geysers in Yellowstone National Park, and part of her illegal ...

A new study shows a volcanic eruption of Yellowstone may be even less likely than we thought: Scientists have discovered a ...

The accompanying footage, captured Monday via the park’s livestream camera, shows several bison driving a grizzly bear from its cozy hangout in the Old Faithful/Upper Geyser Basin area.

Old Faithful erupts more frequently than any of the other big geysers, with an average interval between eruptions spanning 90 minutes, the park’s website states. An eruption lasts anywhere from ...

According to the National Park Service's webpage, Old Faithful, located in the Upper Geyser Basin, erupts more frequently than any other large geyser in the park. The average interval between each ...

A tourist received jail time after she ventured off the boardwalk and about 10 feet onto the cone of the Old Faithful geyser at Yellowstone National Park, federal officials said. Photo by Judy ...