Sawanobori, or river climbing, is a type of mountaineering that involves going up mountain streams to their source which is a very popular sport in Japan. 3 Sawanobori Experts from Japan go to Réunion Island and do Trou de Fer.
Japanese Language Only
Header image belongs to Yusuke Sato which way borrowed from: https://plus.google.com/photos/108987778142841389839/albums/5913969650370475633