Mount Griggs volcano, 2,317-m (7,602 ft)-high, lies 10 km (6 mi) behind the volcanic arc defined by other Katmai group volcanoes. Although no historical eruptions have been reported from Mount Griggs, vigorously active fumaroles persist in a summit crater and along the upper southwest flank. The slopes of Mount Griggs are heavily mantled by fallout from the 1912 Novarupta eruption. View is to the northeast. Photograph by Game McGimsey, U.S. Geological Survey, July 11, 1990.