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

A 4.2 magnitude earthquake struck near Great Falls on Thursday, rattling residents across central Montana but causing minimal damage, according to the United States Geological Survey (USGS).

Yellowstone’s restless ground is on the move again. Since July 2025, instruments on the park’s north rim have recorded ...

A 4.2 magnitude earthquake struck near Great Falls on Thursday, briefly rattling residents and raising questions about why earthquakes occur in the region.

The grounds in the north rim of Yellowstone have bloated about an inch since July 2025 due to magmatic stress. Is this a sign of an impending eruption?

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

Yellowstone National Park's restless ground has captured attention once more, as subtle shifts beneath its steaming landscapes signal the planet's inner workings. After years of stability, a zone ...

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

This less-visited Wyoming wilderness area, known as 'The other volcanic range' in Yellowstone, is known for stunning mountain ...

The vast majority of the many quakes across the region are very small, rarely felt by people, and cause no damage.

Learn more about the past eruptions at Yellowstone National Park and how each new eruption displaced evidence of the past.

Some of Yellowstone’s past eruptions may be hiding, which makes it difficult to answer how many eruptions occurred in the ...