Mount Hakone


Hakone volcano is a stratovolcano truncated by two overlapping calderas, the largest being 10 x 11 km wide. It is located 80 km SW of Tokyo, Japan and contains many young vents and lava domes.

Location: Ashigarashimo, Japan
Coordinates: 35.242600, 139.012059
Volcano Type: Stratovolcano


Mount Hakone’s Location


Mount Hakone’s Latest Status

2024: Alert Level 1 – Not Active.


Mount Hakone’s Eruptive History

6000 BCE Oldest radiocarbon dated eruption
1991 April – A swarm of earthquakes (more than 300) were recorded beneath the caldera. Some were just 5km deep and were felt by local residents.
2015 The alert level was increased (to Level 2) and a no-go zone declared. Japan’s Meteorological Agency warned there was a risk of a small eruption. Hundreds of earthquakes were recorded along with deformation of the land’s surface at the volcano. In June, sediment and debris ejected and formed a new fumarole. Ash was also released prompting the alert level to increase to Level 3.
2019 The alert level has been lowered to Level 1 after seismicity decreased.


Mount Hakone Monitoring

For monitoring of Japan’s Volcanoes, please refer to JMA.


Mount Hakone Images