Firefighters said they found the hydrant knocked over with water shooting about 30 feet in the air from the riser piping.

Scientists are monitoring a city of Chicago-sized swath of rising ground at the northern volcanic rim of the Yellowstone ...

Yellowstone is a dynamic geologic system—the one constant is change. This is demonstrated daily by hydrothermal activity ...

A gigantic bulge in the north rim of the Yellowstone caldera is the latest sign of volcanic activity in the national park.

This geyser in Iceland erupted while a crowd of people stood nearby watching it. The underlying music rights are not ...

A noticeable leak was reported in the area at least two days before.

Add Yahoo as a preferred source to see more of our stories on Google. In some past years, Steamboat Geyser at Yellowstone National Park has erupted dozens of times. This year, the massive geyser ...

Experts have dismissed the possibility of an eruption, saying, 'It’s Yellowstone being Yellowstone.' ...

When you think of the United States, images of sprawling cities and vast landscapes might come to mind, but not the hidden and ever-present geological threat: volcanoes. While you might associate ...