Caving: Kangoo hole test is not the courage and strength, but the body's flexibility. Body folded into a yogi perspective, in order to climb out of "God the coffin".
Caving: Kangoo hole test is not the courage and strength, but the body flexibility. The body is folded into a yogi's point of view, to climb out of the "God's coffin".
Exploratory tunnel: Gan Guodong test is not the guts and strength, but the flexibility of the body. Yoga Masters like body folded into perspective, can climb out "God's coffin".