Karluk 58 mi (94 km) SW Larsen Bay 63 mi (102 km) SE Aleneva 63 mi (101 km) SE Afognak 68 mi (109 km) SE Anchorage 250 mi (402 km) NE
From Smithsonian Institution, online database, accessed December 8, 2003: "Mount Denison lies near the head of the Serpent Tongue, Hook, and Hallo glaciers NE of Snowy volcano. This poorly known section of Katmai National Park contains a cluster of four closely spaced and mostly ice-covered vents. Mount Denison lies at the SW end of this volcanic chain, which also includes Steller, Kukak, and Devils Desk volcanoes. Orientation of lava flows and a thick cross-bedded tephra deposit suggest that a vent is located near Mount Denison (Swanson, in Wood and Kienle 1990). The precise age of the most recent activity at Denison is not known, but the volcano was considered to have been active during the Holocene (Nye et al., 1998)."