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Yellowstone National Park is one of the most dynamic places on Earth. From geysers -- including famed Old Faithful -- to rainbow colored pools -- including the Morning Glory Pool -- to boiling mudpots and fumaroles, Yellowstone National Park is a rare example of geology in motion. The park, in the northeast corner of Montana and the northwest corner of Wyoming, sits over a hotspot -- a weakness in the earth's crust -- that allows magma to rise dangerously close to the surface. Over 2 million years, the hotspot has led to several super volcano eruptions, the most recent being 640,000 years ago. The eruptions have been so powerful that they have fractured mountain ranges, buried the northwest in ash and led to climate change. The Yellowstone National Park super volcano is way overdue for another eruption. Fortunately, there's no sign right now that it's at risk of imminent eruption. In the meantime, we can tour the park and see what happens when hot magma meets cold water in a volcano-tortured landscape. Hint
