Oyanagawa Valley (大柳川渓谷) is located in Fujigawa town, Yamanashi Prefecture. It is a part of Minami Alps. This is one of great one-day-hiking spot in Yamanashi with many beautiful waterfalls. During the early summer, it has beautiful green leaves. In Autumn, it has great Koyo leaves.
Tourist Info.
There is a parking and restroom.
Access
0. at Minobu Station.
1. use JR Minobu Line to Kajikazawacuhi.
2. use local bus to Jukkokukannkouchusyajo.
3 hr.
New Wave Samurai Movie. 
映画好き集まれ！ 
There are 5 waterfalls and 10 suspension bridges. Oyana river is coming from Genji mountain and runs into Fuji river.
Waterfalls
-Amanbuchi Falls-
-Kannon Falls-
-Godan Falls-
-Suzumi Falls-
-Tengu Falls-
Hiking on this valley takes about 3 hours.