Geological Sites

Area AreaSummit CalderaSummit Caldera

The highest point of the crater wall at the summit of Mt. Mihara is the 749m high Kengamine Peak. Before the eruption in 1986, the area around Kengamine Peak was a popular gathering place with a view of the back desert below.

Cross-sections of agglutinates, formed by volcanic bombs and magma splashes, can be seen on the inner walls of the crater near Kengamine Peak. This is where the fumes come from all year round.

White steam is the result of rainwater or groundwater being heated underground to form water vapour, which travels through gaps in the rock to the surface, where it is cooled to form water droplets. At present, no toxic volcanic gases have been observed.

Kengamine Peak seen from the north.


Location Information