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Supervolcano 'could swallow whole US state' as eruption fears growCalifornia, has struck fear into researchers for years. Due to its enormity, it is classed as one of the world's 20 known super volcanoes, with a classification of VEI 8 on the eruption scale.
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Fears grow over supervolcano that 'may swallow entire US state' in apocalyptic eruptionFears are mounting over the potential eruption of a supervolcano in California ... It is one of the world's 20 known super volcanoes, earning a VEI 8 classification on the eruption scale.
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