Experts: Supervolcano in Alaska is 'Active' and Hazardous, Should be Closely Monitored

When the people in the U.S. think of supervolcanoes, they are likely to think of Yellowstone. But people in New Zealand think of Taupo. Supervolcanoes are some 1,000 times greater than a normal volcano. The last supereruption on Earth was Taupo, about 25,000 years ago.