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There is a supervolcano in Arizona: The Silver Creek Caldera near the town of Peach Springs. This volcano erupted between 18 and 19 million years ago. The caldera has since been torn in half by rifting. There are other, nearby supervolcanoes. The Valles Caldera near Santa Fe, New Mexico is the closest. Next would be Long Valley Caldera, in California east of Yosemite. Then there's Yellowstone.

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8y ago

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