Grand Prismatic Hot Spring (IMAGE)
Caption
The gorgeous colors of Yellowstone National Park's Grand Prismatic hot spring are among the park's myriad hydrothermal features created by the fact Yellowstone is a supervolcano - the largest type of volcano on Earth. A new University of Utah study reports discovery of a huge magma reservoir beneath Yellowstone's previously known magma chamber. That doesn't increase the risk of an eruption, but means scientists are getting a better view of Yellowstone's volcanic plumbing system.
Credit
"Windows into the Earth," Robert B. Smith and Lee J. Siegel
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