Novarupta ( meaning " newly erupted " in Latin ) is a volcano that was formed in 1912 , located on the Alaska Peninsula in Katmai National Park and Preserve , about southwest of Anchorage . Formed during the largest volcanic eruption of the 20th century , Novarupta released 30 times the volume of magma of the 1980 eruption of Mount St. Helens
1980 eruption of Mount St. Helens
1980 eruption of Mount St. Helens
Novarupta