The volcanic system beneath Yellowstone National Park is one of the few places on Earth capable of an eruption so large it ...

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 ...

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

At Puʻuʻōʻō, fissures reopened on either side of the vent, while at Maunaulu, the eruption stalled and the vent collapsed ...

A landmark on Pluto that was previously designated as an impact crater may actually be the caldera of a supervolcano that has exploded in the past few million years, new research suggests. But not ...

For years, public imagination has fixated on Yellowstone as the ultimate natural doomsday machine, a supervolcano waiting to ...

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 ...

This stunning astronaut photo shows the natural beauty of Japan's Aso Caldera — a giant crater-like bowl containing 17 different volcanoes, leftover from major eruptions spanning over 200,000 years.

JEMEZ SPRINGS — A rumble rocks the front porch of the log cabin containing the Volcano Discovery Center at the Valles Caldera National Preserve. Another volcanic eruption is beginning, but unlike the ...

POZZUOLI, Italy — In Greek and Roman mythology, the Campi Flegrei volcano is depicted as the opening to the underworld. Its prehistoric eruptions blocked out the sun, turning summer into winter and ...