The Long Valley Caldera was formed by a super-eruption about 760,000 years ago that blasted 140 cubic miles of magma, covering much of east-central California in hot ash that was blown as far away ...

The Long Valley Caldera in the Eastern Sierra Nevada mountains has been unleashing earthquake swarms on a regular basis since 1978, raising concerns that it might be at risk of erupting.

The Long Valley Caldera is the largest volcano in California, according to Zhan. It had a super eruption around 720,000 years ago, comparable to the Yellowstone super eruption.But he says the ...

The Long Valley Caldera is the largest volcano in California, according to Zhan. It had a super eruption around 720,000 years ago, comparable to the Yellowstone super eruption.

New high-resolution images of the Long Valley Caldera indicate that the subsurface environment is cooling off, releasing gas and fluids that contribute to seismic activity. Since the 1980s ...

The Long Valley Caldera in California is about 10 miles wide. And one of the most famous calderas in the world, at Yellowstone National Park, measures 30 miles by 45 miles, according to the U.S ...

The second supervolcano is the Long Valley Caldera in eastern California, which last erupted approximately 100,000 years ago. In the 1970s, “a swarm of earthquakes began to emanate from the ...