The water of Akagawa River is chosen as 100 best Heisei Water. It contains radiative metals. Wellness execise: Stand in the water for 10 min. All those Radium, Potassium and Germanium will penetrate from the bare feet.
Masutomi Akagawa River (増富・赤川) is one of power spot in Masutomi Onsen in Yamanashi Prefecture. There are many metals from the underground is coming out from the mountain.
Tourist Info.
There is parking. No restroom.
Access
0. at Nirasaki Station.
1. use local bus to Masutomi Onsen.
2. walk north.
20 min
New Wave Samurai Movie. 
映画好き集まれ！ 
The water of Akagawa River is chosen as 100 best Heisei Water. It contains radiative metals. Wellness execise: Stand in the water for 10 min. All those Radium, Potassium and Germanium will penetrate from the bare feet.