Mount Ōsawa

What it is

• A 2,820-meter mountain located on the border of Nagano and Shizuoka Prefectures.
• The 55th highest peak in Japan and part of the Southern Alps National Park.
• The primary source for both the Tenryu and Oi rivers.
• A natural habitat for the Japanese rock ptarmigan.

What to see

• Radiolarian fossils located along the established climbing routes.
• A third-class triangulation point marking the summit area.
• Hyakkendora Yamanoie mountain hut situated 0.7 kilometers from the peak.
• Views of neighboring peaks including Mount Akaishi and Nakashimaru-yama.

Getting there

• The summit is located 28 kilometers from Iida Station.
• Climbing routes begin at Shirabiso Pass or via the main ridge trail.

Notes written by Japan Gems from facts in Japanese Wikipedia.