Nature
Chagulak Island is a small, uninhabited volcanic island in Alaska’s Aleutian chain, within the Islands of Four Mountains. It forms a single steep stratovolcanic cone rising directly from the sea, about 1.9 miles wide and reaching 3,747 feet above sea level. Near Amukta Island, it is separated by a channel about 4.3 miles wide, though the two are connected underwater. Little is known about its eruptive history, and no eruptions have been recorded. Scientific study has been limited to a noted chemical analysis from the north shore that identified low-potassium, high-alumina basaltic andesite. The island has also appeared under several variant spellings.
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