description Kanaga fumaroles Overview
Kanaga fumaroles are gas and steam vents in and around the summit crater of Kanaga Volcano on Kanaga Island in Alaska's western Aleutian Islands. The volcano is a 1,307 m andesitic stratovolcano with a roughly 200 m wide summit crater, and the Alaska Volcano Observatory records several active fumaroles in the crater and along its rim. Their presence reflects heat and volcanic gases near the summit of a historically active Aleutian volcano, rather than a separate volcanic cone. [USGS report](https://pubs.usgs.gov/publication/ofr02397); [Alaska Volcano Observatory](https://avo.alaska.edu/volcano/kanaga)
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