There are many waterfalls in this valley and many interesting rocks. Hirato Stone gate is one of the unique feature of Ryumon Valley. There is a hiking course on the side of the river.
Ryumon Valley (竜門峡) is the valley of Hi River located in Koshu, Yamanashi. It literary means Dragon's Gate Valley. The entire valley is about 2.1km long. It is great valley for hiking and fishing. In Fall, there is beautiful Koyo, autumn leaves.
Tourist Info.
There is a parking and restroom. You need to buy a fishing license for fishing at the parking of Keitokuin Temple.
Access
0. at Kofu Station
1. use JR Chuo Line to Kaiyamato (40 min.)
2. walk east (50 min.)
1 hr.
Let's learn MJER Iaijutsu. 
映画好き集まれ！ 
There are many waterfalls in this valley and many interesting rocks. Hirato Stone gate is one of the unique feature of Ryumon Valley. There is a hiking course on the side of the river.