The Panxian Dadong, with a mapped passage of 1660m long is a large karst cave system complicated by multi genesis of morphology.

盘县大洞是一个形态和成因复杂的大型喀斯特洞穴系统。

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The result can find whether the large area of Karst systems belong to the same vadose cave system, which provides the reliable geological data for the study of Karst leakage problems.

结果表明，该区地表水与地下水化学特征比较类似，为判定大区域内岩溶系统是否属于同一流动系统，解决岩溶渗漏问题提供了可靠的基础地质资料。

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Inside the U-shaped Karst cave are a large number of stalactites, stalagmites, stone pillars, stone curtains, and stone flowers, all glistening in colorful lights.

在U形喀斯特洞大量钟乳石，石笋，石柱，石帘，和石头花，闪光七彩灯。

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They also have no proper set of blueprints and the reactor is sited directly over a large karst void in the bedrock.

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Located in southwest China, the Geopark is characterized by numerous karst features: large subterranean rivers, karst windows, natural bridges, extensive cave systems, etc.

UNESCO: NATURAL SCIENCES