Eruption of Novarupta

Date: June 6, 1912 • Location: Bristol Bay Borough, United States

Novarupta is a volcano located on the Alaska Peninsula on a slope of Trident Volcano in Katmai National Park and Preserve, about 290 miles (470 km) southwest of Anchorage. Novarupta was formed in 1912, during the largest volcanic eruption of the 20th century, in which it released 30 times the volume of magma of the 1980 eruption of Mount St. Helens.