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Super volcanoes
Is there a super volcano beneath Yellowstone National Park?
Is there a super volcano beneath Yellowstone National Park? Under the park lies a sleeping giant which could have devastating consequences if it woke. It would eject so much ash that nearby cities would be under kilometers of ash. The amount of material put into the atmosphere could cause many on earth to perish.
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大象传媒 World Service Archive
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Discovery
Explorations in the world of science.
