Ninilchik 47 mi (76 km) SE Salamatof 48 mi (78 km) NE Clam Gulch 49 mi (79 km) SE Kenai Peninsula Borough 50 mi (81 km) NE Anchorage 108 mi (174 km) NE
From Miller and others (1998) : "Redoubt Volcano is a steep-sided cone about 10 km in diameter at its base and with a volume of 30-35 cubic kilometers. The volcano is composed of intercalated pyroclastic deposits and lava flows and rests on Mesozoic granitic rocks of the Alaska-Aleutian Range batholith . It has been moderately dissected by the action of numerous alpine glaciers. A 1.8-km-wide, ice-filled summit crater is breached on the north side by a northward-flowing glacier, informally known as the Drift Glacier, which spreads into a piedmont lobe in the upper Drift River Valley. The most recently active vent is located on the north side of the crater at the head of the Drift glacier. Holocenelahar deposits in the Crescent River and Drift River valleys extend downstream as far as Cook Inlet."
The geologic history of Redoubt Volcano, Alaska, 1994 Till, A. B., Yount, M. E., and Bevier, M. L., 1994, The geologic history of Redoubt Volcano, Alaska: in Miller, T. P. and Chouet, B. A., (eds.), The 1989-1990 eruptions of Redoubt Volcano, Alaska, Journal of Volcanology and Geothermal Research, v. 62, n. 1, p. 11-30.