A man ascends the ropes in the largest underground shaft in the world called Miao Keng in China.

20 24 years 20s adventure cave challenge china chongqing province climbing color image concentration etermination iminishing perspective iscovery exploration extreme sports extreme terrain full length hanging headlamp helmet high angle view hobbies horizontal illuminated indoors leisure activity majestic men mystery photography protective clothing recreational pursuit risk scale spelunking sport two people underground up high wulong young adult big