"Holding on for dear life..."
Climber waves from atop a karst spire, China, Carsten Peter, nationalgeographic.com
Climbing China's Incredible Cliffs
China is home to the world's greatest concentrations of karsts: rocky spires and spillways shaped over millions of years by the elements, which nationalgeographic.com features in an amazing video, The Karsts of China.
See how a team of climbers were inspired by what they describe as a surreal landscape and made a "full Hail Mary attempt" at times as they scaled China's wild formations while "holding on for dear life."
For an entertaining and spectacular video: http://video.nationalgeographic.com/video/magazine/ngm-china-caves-extended?source=relatedvideo