Nature
Mount Dana is a small stratovolcano on the Alaska Peninsula near Canoe Bay and Pavlof Bay, rising to 1,354 metres and marked by a broad summit crater. Formed of intermediate calc-alkaline rocks, it also preserves an andesite dome remnant and exposes much older Jurassic, Cretaceous, and other Mesozoic sedimentary rocks nearby. Though no eruptions are known in historical time, a major prehistoric eruption about 3,840 years ago sent pyroclastic flows through valleys south and west to the sea at Canoe Bay. Blocky lava, volcanic ash, cold springs, and a large tufa mound still show its past activity within the active Alaska-Aleutian volcanic belt.
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Nelson Lagoon, Alaska · United States