Mount Awu () is the largest volcano in the Sangihe chain, located on Sangir Island in North Sulawesi, Indonesia. Powerful eruptions occurred in 1711, 1812, 1856, 1822, 1892, and 1966 with devastating pyroclastic flows and lahars that have resulted in 11,048 fatalities. A total of 18 eruptions are recorded from 1640, with two of VEI 4 (1814 and 1966) and 3 with VEI 3 (1711, 1856 and 1892), one eruption every ~ 20 years. The hazardous nature of the volcano is determined from the continuos lava source driven by the geodynamic setting (a double subduction line that creates an arc to arc collision) and the presence of a crater lake, sustained by the consistent rainfall on the island, on top of a lava dome. This setting create the condition for a water injection in the lava dome that can cause a water-magma explosion. A 4.5 km wide crater is found at the summit and a deep valley forms a passageway for lahars, splitting the flanks from the crater. This is a volcano in the Ring of Fire. See also List of volcanoes in Indonesia References Stratovolcanoes of Indonesia Active volcanoes of Indonesia Mountains of North Sulawesi VEI-4 volcanoes Landforms of the Celebes Sea Landforms of North Sulawesi 20th-century volcanic events 19th-century volcanic events 18th-century volcanic events Volcanic crater lakes Holocene stratovolcanoes