Asamayama

Volcanic complex · 2,568 m · Japan

Asamayama sits on the Okhotsk Plate, in a subduction zone. 145 eruptions are known since the end of the last ice age, the most recent in 2019. Its major eruptions caused at least 2,360 deaths.

Elevation: 2,568 m
Type: Volcanic complex
Tectonic Setting: Subduction zone, continental crust
Dominant Rock: Andesite / Basaltic Andesite
Plate: Okhotsk Plate
Country: Japan
Last Eruption: 2019
Known Eruptions (Holocene): 145
Max. Explosivity (VEI): 5
Known Fatalities: 2,360

Nearby Cities

Cities of more than 20,000 people within 100 km.

42 kmNagano594,000 people
49 kmMaebashi345,000 people
53 kmMatsumoto225,000 people
84 kmKōfu198,000 people

Eruption Timeline

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

Eruption Deadly Eruption (NOAA) Uncertain Date

Wikipedia article

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

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Asamayama

Nearby Cities

Eruption Timeline