An eruption at one of Hawaii’s most famous volcanoes produced an unexpected and mesmerizing effect. When Halemaʻumaʻu crater ...

From USGS Hawaiian Volcano Observatory livestreaming V2cam, a plume-like fountain erupted from the north vent during episode ...

Most tourists who visit Yellowstone National Park snap photos of Old Faithful and stroll past bubbling mud pots, never realizing they're walking on top of one of Earth's most powerful geological ...

1959 Kīlauea Iki eruption: It happened in the crater just north of the volcano’s caldera, lasting only about a month with 17 episodes and inclined lava fountains, including the highest lava fountains ...

An episode of lava fountaining at Kilauea ended early today after nearly six hours of continuous activity inside Halemaumau crater, according to the U.S. Geological Survey’s Hawaiian Volcano ...

Yellowstone's volcanic past reveals a dynamic system of repeated caldera-forming eruptions and smaller lava flows, with magma ...

A weak layer of crust deep below the floor of Italy's Campi Flegrei causes the caldera to undergo periods of earth-trembling unrest, new research has found. According to the new study, published April ...

In the form of sweeping darkness overtaking miles of land, a volcanic eruption more than a million years ago helped form what’s now known as Valles Caldera in New Mexico. In a couple of months, New ...

A tree ultimately broke his fall, saving the man from an additional, potentially fatal 100-foot fall to the caldera floor NPS Photo/F.Aiona; NPS Photo/J. Wei A 30-year-old man survived a 30-foot fall ...

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 ...

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 ...