Davidof Volcano

Davidof Volcano is a potentially active stratovolcano and caldera remnant on Davidof Island in Alaska’s Aleutian Islands, within the Rat Islands group and the Aleutian Arc along the Pacific Ring of Fire. The island is one of four small islands formed when a larger stratovolcano collapsed in the late Cenozoic, and Davidof is the largest, with steep slopes and sea cliffs. Although no historic eruptions are recorded, lava-flow deposits may be less than 10,000 years old, and earthquake swarms in late 2021 and early 2022 raised concern. Studies found layered lava, breccia, and pyroclastic deposits, while the remote island remains heavily vegetated.