There's enough magma beneath Yellowstone National Park to fill the Grand Canyon almost 14 times.
Researchers have discovered a previously unknown magma reservoir below the supervolcano at Yellowstone National Park. The chamber, which is about 28 miles beneath the earth's surface, contains about 11,200 cubic miles of magma, Smithsonian reports. Before the new findings, scientists only knew about the 2,500 cubic miles of magma in an upper chamber beneath the volcano.
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