Mount NyūMount Nyū is a stratovolcano of the Northern Yatsugatake Volcanic Group in Koumi, Nagano Prefecture, Japan. This mountain is part of the Yatsugatake-Chūshin Kōgen Quasi-National Park.Climbing routeThere are several routes to reach to the top of Mount Nyū. One is from Shirokoma Pond, it takes one and half hours. Another major route is from Mount Naka.Access Shirokomaike-iriguchi Bus Stop of Chikuma Bus Mugikusa-toge Bus Stop of Chikuma Bus