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

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

Ranger Adam Dean from the Valles Caldera National Preserve speaks to Kiwanis at their Jan. 20 meeting. Courtesy photo BY BROOKE DAVISKiwanis Club Jan. 20, the Kiwanis Club of Los Alamos was ...

Kīlauea seems to be in a shaking kind of mood after Episode 40 of its ongoing episodic lava-fountaining eruption at the summit ended Monday (Jan. 12), with a third swarm of earthquakes rattling the ...

United States Geological Survey (USGS) scientist Mark Stelton (left) and Kenneth Sims, a UW professor of geology and geophysics and a member of the USGS Yellowstone Volcano Observatory, examine a ...

Since it was recognized as an International Dark Sky Park in 2021, the Valles Caldera National Preserve has provided visitors with opportunities to experience the night skies at the northern New ...

Inside the McDermitt Caldera, a 16‑million‑year‑old volcanic crater straddling the Oregon–Nevada border, geologists have ...

Yellowstone Caldera Chronicles is a weekly column written by scientists and collaborators of the Yellowstone Volcano Observatory. This week's contribution is from Mike Poland, geophysicist with the ...

But as a reader of Yellowstone Caldera Chronicles, you probably guessed that things are slightly more complex. Almost nothing at Yellowstone, or any other volcano, is simple. Volcanoes are complicated ...

Hidden beneath an ancient volcanic basin on the Oregon and Nevada border, geologists say the United States may be sitting on ...

HAWAII VOLCANOES NATIONAL PARK, Hawaii -- A man has been injured after he fell into the caldera of the Kilauea volcano on Hawaii's Big Island, according to officials. The man fell from a 300-foot ...