in Japan, south of Mounts Katsuragi(Osaka) is the waterfall called BUNZOO-no-taki. This secret place, with a difficult access yet, was the training waterfall during feudal times for the famous ascetic saint monk MONGAKU.
It is a very cold place, in winter or summer.
45 minuts under in falls 2007.
Guintard S
monk: kuban guintard