Live
    Live Atlas World Map
    FREN

    World Map › Mount Aniakchak

    Volcano

    Mount Aniakchak

    Caldera · 1,341 m · United States of America

    Mount Aniakchak
    Photo: M. Williams, National Park Service · Public domain · Wikimedia Commons

    Mount Aniakchak sits on the North American Plate, in a subduction zone. 17 eruptions are known since the end of the last ice age, the most recent in 1931.

    Elevation
    1,341 m
    Type
    Caldera
    Tectonic Setting
    Subduction zone, continental crust
    Dominant Rock
    Andesite / Basaltic Andesite
    Plate
    North American Plate
    Country
    United States of America
    Last Eruption
    1931
    Known Eruptions (Holocene)
    17
    Max. Explosivity (VEI)
    6

    Eruption Timeline

    Each bar is an eruption; its height shows its explosivity (VEI 0 to 8).

    6,300 BCE · VEI 65,930 BCE2,550 BCE1,645 BCE · VEI 6370 BCE200460700 · VEI 01050112011901280137014701540 · VEI 41931 · VEI 41942 VEI 2VEI 4VEI 6 6,300 BCE1500180019002000

    Eruption Uncertain Date

    Sources : Global Volcanism Program, 2026. Volcanoes of the World (v. 5.4.0; 7 Aug 2026), Smithsonian Institution, doi:10.5479/si.GVP.VOTW5-2026.5.4 (volcano.si.edu) · NOAA NCEI · USGS · Wikidata