China is home to the world's greatest concentration of karsts: rocky spires and spillways shaped over time by the elements. For some climbers, scaling these challenging natural sculptures is the experience of a lifetime. Read more about China's supercaves online in National Geographic magazine: http://www.nationalgeographic.com/china-caves/ PRODUCED BY: 3 Strings Productions DIRECTOR, VIDEOGRAPHER, AND EDITOR: Keith Ladzinski AERIAL VIDEOGRAPHERS: Chad Copeland and Brad Henning ASSISTANT EDITOR: Cedar Wright MUSIC: "Sudden Throw" by Ólafur Arnalds