Video: Shuanghe caves system - longest cave network in Asia

Guizhou Province in China ...
has long been known for its expansive karst landscape. It’s home to towering limestone peaks, deep gorges and cascading waterfalls, but perhaps its most remarkable feature is the underground kingdom of caves that spans through its mountains and below the surface. The Shuanghe cave system is the biggest in Suiyang city. It stretches for more than 300 kilometers, making it the largest cave network in Asia. 

Learn more about the cave system: here
Video by China Matters (8:32 minutes): here