Long Valley supervolcano warning as 'clues of imminent eruption' across Californian county

Long Valley supervolcano warning as 'clues of imminent eruption' across Californian county

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THE LONG VALLEY CALDERA supervolcano is considered to be one of the world's most dangerous, with signs that an eruption is "imminent" having surfaced across the Californian region. Long Valley Caldera is a depression in eastern California that sits next to the Mammoth Mountain. One of the planet's largest calderas ...

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