The karst of Xingwen, China, contains the Xiaoyanwan tiankeng, alongside the degraded tiankeng of Dayanwan and also the potential collapse chambers in the Zhucaojing cave system.

 
  • 四川興文喀斯特包括小巖灣天坑和大巖灣退化天坑,以及豬槽井洞穴系統中潛在的洞穴崩塌大廳。
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