Volcano profile

Japan

Mashu.

Volcano profile for Mashu in Japan, including its current status, catalog data, nearby earthquakes and live map layers.

Live mapAll volcanoes
Current status
No current eruption report
Volcano type
Caldera
Elevation
857 m
Last documented eruption
1080
Explosivity (VEI)
VEI 6 highest recorded · latest VEI 5 · More about the VEI
Coordinates
43.572°, 144.561°
GVP number
285081

Live map

Live map around Mashu

Satellites & ash clouds

Map options

Airports and nuclear plants provide geographic context. Being in or near an area does not establish closure, damage or a specific hazard.

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No current eruption report

Japan

Mashu

Caldera

Elevation
857 m
Last documented eruption
1080
No current eruption report

No current report does not mean extinct or safe. Source coverage varies between volcanoes.

Geography & tectonics
Coordinates
43.572°, 144.561°
Volcanic region (GVP)
Kuril Volcanic Arc
Tectonic setting
Subduction zone / Continental crust (> 25 km)
GVP
285081
Documented eruptions · Nearby earthquakes ↓

Source: Smithsonian Global Volcanism Program

This display is not an official warning. Follow information from the responsible authorities when making local decisions.

Profile

Mashu · Japan

Documented eruptions

All catalogued eruptions, newest first. Historical records are incomplete; missing values are unknown. VEI describes eruption explosivity.

StartEndVEIReport status
1080Uncertain datingNot available5Confirmed eruption
350Uncertain datingNot available2Confirmed eruption
150Uncertain datingNot available4Confirmed eruption
2050 BCEUncertain datingNot available4Confirmed eruption
2800 BCEUncertain datingNot available3Confirmed eruption
3550 BCEUncertain datingNot available4Confirmed eruption
5550 BCEUncertain datingNot available6Confirmed eruption

Source: Smithsonian GVP · Dataset date: 2026-11-13

Nearby earthquakes

Last 7 days · 100 km · up to 10 events. Proximity does not establish a volcanic cause.

  • No recorded events in this selection.
Nearby earthquakes ↗

QuakeMap24

Volcano at a glance

Map view with the current report status and volcano elevation.

Mashu · No current eruption report · 857 m

Radius · 100 km

Nearby infrastructure

Up to 3 nearest sites per category

Airports

  • Nakashibetsu AirportJapan · SHB · RJCN
    32.1 kmStraight-line distance
  • Memanbetsu AirportJapan · MMB · RJCM
    46.9 kmStraight-line distance
  • Kushiro AirportJapan · KUH · RJCK
    66.1 kmStraight-line distance

Source: OurAirports · Dataset date: 2026-11-13

This selection shows geographic proximity, not a hazard zone or confirmed impacts. Distances use recorded site coordinates. Sources & data dates

Nearby places

NakashibetsuJapan · 33.2 km

MotomachiJapan · 46.9 km

ShibetsuJapan · 47.0 km

Source: GeoNames · Radius: 50 km · Straight-line distance

QuakeMap24

Sources & data dates

Core data comes from the Smithsonian Global Volcanism Program and USGS. Map layers and live aircraft are loaded from the sources identified on the page.

This display is not an official warning. Follow information from the responsible authorities when making local decisions.

VAAC / NOAA NWS

Satellite layers · Last successful retrieval: Nov 13, 2026, 12:23 PM UTC