Yellowstone has endured three major caldera-forming eruptions within the past 2 million years. Volcanic debris from these eruptions has been discovered as far south as Louisiana and as far west as California.

Map by Alejandro Tumas

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When a Sleeping Giant Awakes
When a Sleeping Giant Awakes Article

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6-12+

Subjects
Geography, Science

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Past volcanic eruptions that have taken place at Yellowstone National Park have been global disasters. Today, scientists are trying to predict how this ticking time bomb will explode—or fizzle out.