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Photo: Σ64, CC BY-SA 3.0 via Wikimedia Commons
Its summit is the highest point in Tokyo.
Mount Kumotori stands at the boundary of Tokyo, Saitama, and Yamanashi Prefectures on the island of Honshū, Japan. With an elevation of 2,017 metres (6,617 ft), its summit is the highest point in Tokyo. It separates the Okutama Mountains and the Okuchichibu Mountains. While it marks the end of the Ishione (石尾根) mountain ridge that begins near the JR Oku-Tama Station, the highest mountain ridge in Tokyo, its remote location amongst a group of mountains from both mountain ranges makes access difficult.
© OpenStreetMap contributors
三峰山
Home to the 2000-year-old Mitsumine Shrine (三峯神社 Mitsumine-jinja, mitsuminejinja.or.jp) on the summit of this fairly tame 1100m mountain. The easiest methods of access are via cable car from Chichibu Railway Mitsumine-guchi (¥ 950/1650 one-way/return, every 30 min from 09:00 to 16:30) or direct bus from Seibu Chichibu station (¥900, 5 daily). Still, you may find it more rewarding to hike up (or down), there are some nice views and waterfalls along the way and you can pop in at the shrine ryokan Kounhaku's onsen baths for a refreshing dip afterwards (¥500).
大菩薩嶺
One of the 100 Famous Mountains of Japan.
橋立鍾乳洞, Hashidate Shounyudo
御岳山
Follows a very similar pattern, with the Musashi-Mitake Shrine (武蔵御嶽神社) up top. Take a bus from Mitake Station to the Mitake cablecar (10 min, ¥270), then the cable car up to the shrine (¥1090 return).