Two explorers crawl past along a ledge in a cave in China.

20 24 years 20s adventure at the edge of cave challenge china chongqing province climbing color image etermination irty iscovery exploration extreme sports extreme terrain flowing water front view headlamp helmet hobbies horizontal illuminated indoors leisure activity looking away men photography protective clothing recreational pursuit river rock spelunking sport three quarter length two people underground water women wulong young adult