Guizhou Suiyang Shuanghe River Water-Eroded Cave is Chinese rare and unique cave system.

贵州绥阳双河溶洞群是中国罕见的、有独特景观的洞穴系统。

Guizhou Suiyang Shuanghe River Water - Eroded Cave is Chinese rare and unique cave system.

贵州绥阳双河溶洞群是中国罕见的、有独特景观的洞穴系统.

The hole is the opening to what was a dry cave system during the Ice Age.

这个洞是冰河时期一个干岩洞系统的开口。