American wingsuit pilot Jeb Corliss glides through a crack with an average speed of 200 kilometers per hour in Jianglang Mountain, Quzhou city, East China's Zhejiang province, Sept 28, 2013. The fissure is 312 meters high and the narrowest place is only 3.5 meters wide. Wingsuit flying is one of the world's most dangerous extreme sports. [Photo/CFP]