[4][6][5] Korovin is the most active of the four vents, but there have also been a couple historical eruptions attributed to nearby Kliuchef.

Fumaroles and hydrothermal vents regularly steam from both peaks.

[5] A short-lived explosion occurred from the summit crater of Korovin on March 27, 2024 with no reports of ash emission.

[3] There were also reports of recent eruptions at the volcano in 2002, 2004 and 2005 which are considered questionable.

This article about a location in the Aleutians West Census Area, Alaska is a stub.