Yellowstone Eruption Disaster

The last full-scale eruption of the Yellowstone Supervolcano, the Lava Creek eruption which happened approximately 640,000 years ago, ejected approximately 240 cubic miles (1,000 km3) of rock, dust and volcanic ash into the sky. Geologists are closely monitoring the rise and fall of the Yellowstone Plateau, which has been rising as quickly as 0.6 inches (1.5 cm) per year, as an indication of changes in magma chamber pressure.

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