Mount Shari, Stratovolcano in Shiretoko Peninsula, Japan

Mount Shari is a Quaternary stratovolcano and lava dome complex of andesite, dacite and basalt, 1,547 m high, on the borders of Shari, Kiyosato and Shibetsu. Its summit holds the main peak, Southern Mount Shari and a western ridge, ringed by explosion craters. Seen from Shari town it forms a balanced triangle; from Kiyosato two peaks stand out. A stone tablet on an andesite outcrop reads 岳頂上 .545M.

Mount Shari is a Quaternary volcano of the Akan-Shiretoko volcanic chain, active roughly 300,000 to 250,000 years ago. Yasuda Tomoki and colleagues divide its growth into an older stage, when central eruptions built the main stratovolcano and dykes intruded it, and a younger stage, when basalt and andesite lavas covered the flanks after an erosional pause. In March 1928 Tadahei Hara and Seiki Nakano made the first winter ascent.

The Ainu name Onnenupuri means "great (old) mountain"; the name Shari itself refers to marshes where reeds grow. Since 1935 a small shrine, Shari-dake Jinja, has stood just below the summit, and the mountain appears as Shari-dake in Edo-period records such as the Kondo Juzo text and the 1856 Kyowa Shieki.

The Kiyosato route is the most popular; its trailhead sits at the Seigakuso hut on the fifth station, where the path splits at the lower junction into an old valley route and a new ridge route via Kumami Pass. Sharibus runs from Shiretokoshari Station three times a day, the first at 6:30. The Shari (Toyosato) route climbs from the Shari side through a dry stream bed called Tamaishi-no-sawa.

A stone tablet set into an andesite outcrop near the summit reads "岳頂上" above ".545M", marking the top at 1,545 m even though the official summit height is 1,547 m. The summit area also holds the main peak, Southern Mount Shari and the western peak, with several explosion craters around them.