 In Yellowstone National Park, in the northwest corner of Wyoming, lies the Yellowstone caldera, one of the most famous supervolcanoes on Earth. The supervolcanos last eruption was 631,000 years ago. Before then, it erupted 2.1 million and 1.3 million years ago. These eruptions were some of the largest known to man. If it were to ... When was the last time Yellowstone supervolcano erupted?... 