Mount Hakone

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Mount Hakone
箱根山
Hakone Volcano 3D 2013.jpg
Hakone Volcano (Mount Hakone)
Highest point
Elevation 1,438 metres (4,718 ft)
Coordinates 35°13′48″N 139°01′26″E / 35.230°N 139.024°E / 35.230; 139.024Coordinates: 35°13′48″N 139°01′26″E / 35.230°N 139.024°E / 35.230; 139.024[1]
Geography
Location Hakone, Kanagawa, Honshu
Geology
Mountain type Complex calderas
Last eruption June to July 2015[2]

Mount Hakone (箱根山 Hakoneyama?) is a complex volcano in Kanagawa Prefecture, Japan that is truncated by two overlapping calderas, the largest of which is 10 × 11 km wide. The calderas were formed as a result of two major explosive eruptions about 180,000 and 49,000–60,000 years ago. Lake Ashi lies between the southwestern caldera wall and a half dozen post-caldera lava domes that arose along a southwest–northeastern trend cutting through the center of the calderas. Dome growth occurred progressively to the south, and the largest and youngest of them, Kami-yama, forms the high point of Hakone. The calderas are breached to the east by the Haya-kawa canyon. Mount Ashigara is a parasitic cone.[3]

The latest magmatic eruptive activity at Hakone occurred 2,900 years ago. It produced a pyroclastic flow and a lava dome in the explosion crater, although phreatic eruptions took place as recently as the 12–13th centuries AD.[4]

Lake Ashi viewed from central cone Mt.Komagatake lava dome.
Central cones of Hakone Volcano

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