About 80% of the area of Nagano Prefecture is covered with forests. There are many famous peaks in the Japanese Alps, and popular sightseeing spots such as Kamikochi and Mt. Shirouma (or Mt. Okuba as called by the locals) are also located in Nagano Prefecture. Of the 23 mountains with altitude of 3,000-meter-or-above in Japan, 15 are in Nagano Prefecture!