| Yatsugatake Mountains | |
|---|---|
 Yatsugatake Mountains, viewed from Minamimaki, Nagano. | |
| Highest point | |
| Peak | Mount Aka |
| Elevation | 2,899 m (9,511 ft) |
| Dimensions | |
| Length | 30 km (19 mi) North-South |
| Naming | |
| Etymology | Mountain with eight peaks[1] |
| Native name | 八ヶ岳連峰 (Japanese) |
| Geography | |
| Country | Japan |
| States | Nagano Prefecture and Yamanashi Prefecture |
| Region | Chūbu |
| Biome | Alpine climate |
| Geology | |
| Orogeny | Island arc |
| Age of rock | Quaternary |
| Type of rock | Volcanic |
The Yatsugatake Mountains (八ヶ岳連峰, Yatsugatake-renpō) are a volcanic mountain range on the border between Nagano Prefecture and Yamanashi Prefecture on the island of Honshū in Japan.[1]