Every year a group of extreme lovers from Moscow are rafting down a river. And, since it is Russia, that is not just ordinary rafting, but crazy rafting under the ground. This time it was the small river Khapilovka the most part of which flows on a wide underground tube. (Photos + video).
As a result: a lot of fun, a lot of adrenaline, and 2 (out of 25) broken boats.