Photo: Supervolcano Raises Yellowstone, Fuels Geysers, Study Says



A satellite image of the area around the Yellowstone volcanic crater (dotted line) shows changes in ground level from 1996 to 2000.

The bull's-eye pattern along the crater's north rim indicates an area of substantial uplift. According to a new study, the rise was caused by an underground magma bottleneck.

Image courtesy USGS


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