Unasawa Valley (海沢渓谷) is located deep side of Okutama, Tokyo. It is one of the best Tokyo’s nature spots. There are many beautiful waterfalls and the trekking course reads to Mt. Ogaku. The trekking course contains some steep hillsides that require rope to climb. To the way to Great Falls, it is not so hard walking.
Tourist Info.
There is parking and restroom at the entrance of its trekking course.
Access
1. at Haijima Station.
2. use JR Ome Line to Okutama.
3. walk south 2 hours.
2 hr.
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映画好き集まれ！ 
There are many beautiful waterfalls in this valley.
-Tenguiwa Falls-
-Mitsugama Falls-
-Nejire Falls-
-Otaki Falls-
The trekking course continues after Otaki Falls, and there is another falls. However, after Otaki falls, the course becomes very difficult. So, be very prepared to climb up Mt. Ogaku.