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

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 ...

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

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 ...

Viewers watching the U.S. Geological Survey’s livestream of the latest eruption of Kīlauea on Tuesday evening were surprised ...

The PHIVOLCS Volcano Alert Level Scheme is a guide to understanding the state of an active volcano, the current threat it ...

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 ...

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 ...

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 ...

FIVE AND SATURDAY FROM NINE UNTIL THREE. HAPPENING TODAY. THE NATIONAL PARK SERVICE IS PLANNING PRESCRIBED BURNS AT CALDERA NATIONAL PRESERVE. CREWS WILL BURN PILES OF WOOD DEBRIS IN SEVERAL AREAS ...