is a mountain in Azumino, Nagano Prefecture, Japan. It is situated in Japan's Hida Mountains in Nagano Prefecture.
It was specified for Chà «bu-Sangaku National Park on December 4, 1934. Granite forms the unique body with white sands and sharp rocks exposed at the top. Kassen One (ridge) is a steep trail challenging to climbers ascending from .
The mountain climbing trail between Mount Tsubakuro and Mount Yari is called owing to its extensive use over time. It has two mountain huts along the way. is near the summit and is one of the oldest mountain huts in Japan, completed in 1921.
The following are the main mountains in the surrounding area:
The rivers flowing on the slopes of Mount Tsubakuro are mountain streams flowing towards the Shinano River basin. The Nakabusa River rises on the eastern side and tributaries of the upper stream of the Takase River rise on the western slopes.