A scalding-hot pool of mineral water is shown at the Long Valley Caldera in 2019 near Mammoth Lakes. (George Rose / Getty Images) One of California's riskiest volcanoes has for decades been ...

Caltech researchers say a risky California volcano is cooling down Mammoth Lakes, Calif., with the Long Valley Caldera seen in the far distance.

California is earthquake country.But the state’s complex geology offer another less known threat.Three of California’s volcanoes are considered to be a very high threat, along with 15 o… ...

Northern California's Mount Shasta was included in the top five Thursday on a list of 18 U.S. volcanoes classified as having "very high threat" by the U.S. Geological Survey.

"Scary wildfire behavior in California," McCarthy posted with the video. "Like an exploding volcano, the Garnet Fire in the ...

California's next 'big one' may not be an earthquake. According to a new study from the U.S. Geological Survey, a future volcanic eruption is not only inevitable, hundreds of thousands of people ...

Hidden in the murky depths of the Pacific Ocean off the coast of California, a series of asphalt volcanoes rise from the seafloor. The underwater domes are like giant parking lots, teeming with ...

California is famous for its catastrophic earthquakes and wildfires, but they aren't the state’s only natural hazards. The state also has a dozen restive volcanoes that stretch nearly from one ...

The next big earthquake. A perilous wildfire season. California definitely has its share of potential disasters – but one you might not normally think of are volcanoes.

In addition to Shasta, the California volcanoes categorized as “very high threat” are Lassen and the Long Valley Caldera, in the high desert east of Mammoth Mountain (which is itself a volcano).

One of California's riskiest volcanoes has for decades been undergoing geological changes and seismic activity, which are sometimes a precursor to an eruption, but — thankfully — no ...