 National Geographic | Yellowstone Has Bulged as Magma Pocket Swells National Geographic Yellowstone National Park's supervolcano just took a deep "breath," causing miles of ground to rise dramatically, scientists report. The simmering volcano has produced major eruptions—each a thousand times more powerful than Mount St. Helens's 1980 ... |
Friday, February 4, 2011
Yellowstone Has Bulged as Magma Pocket Swells - National Geographic
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