(Reuters) - The world's largest active geyser has erupted three times in the past six weeks at Yellowstone National Park, including once this week, in a pattern that is unusual but not at all ...

WEST YELLOWSTONE - One of Yellowstone National Park’s largest geysers shot to life early Monday morning, an eruption that would have occurred in the dark if not for a full moon. A park webcam captured ...

This is a photograph of Twin Buttes in Lower Geyser Basin looking to the northwest, with Excelsior Geyser of Midway Geyser Basin in the foreground. Twin Buttes is a thermal kame that formed when ...

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

Three years after its last eruption, Ledge geyser in Yellowstone National Park roared back to life April 28. Ledge is the second-largest geyser in Norris Geyser Basin, after Steamboat. What it lacks ...

If you don't get to see it, there are more than 500 active geysers located within Yellowstone National Park, including Old Faithful. Established in 1872, Yellowstone National Park was the world's ...

The same geyser that erupted last summer in a hydrothermal explosion along a Yellowstone National Park boardwalk was caught erupting on video again thanks to a newly-installed webcam to track the ...