Drum is a stratovolcano in the Wrangell Mountains. It is between 0.65 and 0.24 million years old. It was built in two stages. The first stage produced andesite and dacite lava flows, lahars, tuffs and rhyolite domes. The second stage produced more dacite flows. At least nine dacite domes were built in a 7.5-8 mile (12-13 km) wide circle around Mt. Drum. After the second stage, eruption activity destroyed the south half of the volcano. It left avalanche material over a 200 square km area. No activity of Mt. Drum has ever been seen by man.
Wood, Charles A. and Kienle, Jurgen, "Volcanoes of North America United States and Canada," Cambridge University Press, 347 pp., 1990.
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