Kikai Caldera
| Kikai Caldera | |
|---|---|
| Highest point | |
| Peak | Mount Iō (Iōjima), Iōjima, Ōsumi Islands, Japan |
| Elevation | 704 m (2,310 ft) |
| Coordinates | 30°47′N 130°19′E / 30.79°N 130.31°E |
| Dimensions | |
| Length | 17 km (11 mi) NS |
| Width | 20 km (12 mi) EW |
| Naming | |
| Native name | 鬼界カルデラ (Japanese) |
| Geography | |
| Country | Japan |
| State | Kagoshima Prefecture |
| Region | Ōsumi Islands |
| District | Kagoshima District |
| Subdivisions | |
| Municipality | Mishima |
| Geology | |
| Rock age | 6,300 to 95,000 years ago |
Kikai Caldera (鬼界カルデラ, Kikai karudera) (alternatively Kikaiga-shima, Kikai Caldera Complex) is a massive, mostly submerged caldera up to 19 kilometres (12 mi) in diameter in the Ōsumi Islands of Kagoshima Prefecture, Japan.