Makushin Volcano, Active stratovolcano in Unalaska Island, United States

Makushin Volcano is an active stratovolcano on Unalaska Island that rises approximately 2036 meters. A large ice field covers its summit, and a breached crater marks the peak of this volcanic formation.

Russian explorers documented the volcano in 1792 and called it Ognedyshushchaya Gora, roughly meaning burning mountain. The American geographer George Davidson later studied it during his 1867 expedition.

The Aleut name for the volcano was Aigagin, derived from the word Aigak in the Aleut language. On the northern shore of Makushin Bay stood a native village of six yourts housing 35 people, where the foreman of the Russian American Company lived.

The summit caldera is about 2.5 km wide and the volcano's broad, dome-like profile is covered by an ice field of roughly 40 km². The Alaska Volcano Observatory monitors it; the nearest town is Unalaska, across Unalaska Bay to the east. Access is by boat or aircraft, and the terrain is glaciated.

Hot springs and fumaroles dot the southeastern flanks, and scientists study them for potential energy use. These geothermal features reveal the ongoing heat source beneath the mountain and hint at its active volcanic processes.