Sinkholes are dramatic geological ... Read more: The 40 Most Mysterious Places In The Whole Entire World China's expansive Karst region is spread across the provinces of Guizhou, Guangxi, Yunnan ...
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 ...
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