The lava dome named Novarupta marks the 1.2 mile-wide vent of the 1912 Novarupta-Katmai eruption. Novarupta is 1,235 feet wide and 211 feet high. Southcentral and Kodiak Island residents are ...

First, the area was designated as a national monument in 1918 to protect the area created by the great volcanic eruption of 1912 of Novarupta, which formed the Valley with a pyroclastic flow of ...