Yellowstone Caldera Chronicles is a weekly column written by scientists and collaborators of the Yellowstone Volcano Observatory. This week's contribution is from Sin-Mei Wu, Jamie Farrell, and ...

Visitors ran for safety at Yellowstone National Park after a hydrothermal explosion sent rock and steam spewing into the air north of the Old Faithful geyser Tuesday, park officials said. There were ...

LANDER - Old Faithful, as it turns out, has been getting a bit sluggish during the dry times. Geologists have known for years that earthquakes can affect geyser activity, but a new study suggests that ...

A hydrothermal explosion violently shook part of Yellowstone National Park's Biscuit Basin Tuesday, damaging a boardwalk as several park guests ran to safety. The explosion occurred at the Biscuit ...

The Yellowstone Caldera, a volcanically active region under and around Yellowstone National Park, has long been the subject of research, speculation and science fiction regarding the possibility of a ...

Video shows a bison completely unfazed by Old Faithful geyser eruption at Yellowstone National Park. Screengrab from Storyful A stoic bison didn’t care at all that an iconic geyser was exploding ...

BOZEMAN, Mont. -- A thermal spring near Old Faithful in Yellowstone National Park has erupted for the fourth time in the last 60 years, a park official said Thursday. Ear Spring on Yellowstone's ...

Old Faithful is one of the biggest icons of Yellowstone National Park! Truly, it is the world's most famous geyser and a bucket list destination for many. A visit to the world's first national park ...