Mount Daibosatsu (大菩薩嶺) stands in the Yamanashi side of Chichibu-Tama-Kai National Park. The peak itself is in Kōshū, Yamanashi. It is 2,057 metres (6,749 ft) high. Daibosatsu Pass divides Kōshū from Kosuge Village. Trails lead to the top from Kōshū, Tabayama, and Kosuge.
The mountain originally took a part of Ōme Kaidō in Edo era, used as carrying lime from Kai Province where produces lime to Edo. And, Edo bakufu established Taba-shuku near Mount Daibosatsu. Mount Daibosatsu has two famous passes, which was also called Daibosatsu-toge and Yanagisawa-toge respectively. Daibosatsu-toge had been used as Ome Kaido, which was alternative Kōshū Kaidō until Yanagisawa-toge was open to traffic in Meiji era.
The start of trail up the Mount Daibosatsu is located near Hashidate-shita bus stop. In additional to it, 20 minutes' walk will bring you from Kosuge-no-Yu bus stop to the start. Their bus stops are operated by Nishi Tokyo Bus travel from/to Okutama Station, simultaneously Kosuge Municipal Bus and Fujikyu Bus travel from/to Otsuki Station or Uenohara Station.