China’s enormous sinkholes are drawing huge crowds of tourists, but experts caution that the influx of visitors poses a serious risk to the delicate ecosystems within these natural wonders.

Take one look at the giant sinkholes that pockmark China's southwestern regions and it's easy to see why they are dubbed "tiankeng" — a Mandarin word meaning "heavenly pits." Not only do the ...

An curved arrow pointing right. A traffic officer in the city of Hangzhou, China, was patrolling a busy intersection when he noticed cracks forming in the road. He sprung into action, blocking off ...

Deep in China's Fengjie County lies a natural wonder that has fascinated experts for decades. The Xiaozhai Tiankeng sinkhole is vast. Probably formed centuries ago by collapsing caves and ...