Supervolcano at Yellowstone stretches far underground - CBS News

CBS News
Supervolcano at Yellowstone stretches far underground
CBS News
Lurking beneath Old Faithful, scientists have long known there was a supervolcano in Yellowstone National Park with the potential to make the Mt. St. Helens' eruption look like child's play. Now, they are coming to grips with the entire volcanic system.
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