《徐霞客游记·楚游日记八》
又往南三里，越过一座小岭，望见西面的山层层向下坠陷，不时露出石棱石块＊很奇特；随即，胜景集聚一区，数不清的孔穴中景态错综变幻。
又南三里，逾一小岭，望西山层坠而下，时现石骨，逗奇标异；已而一区凑灵，万窍逆幻。
And another three li to the south, crossing over a small ridge, you see layers of mountains falling downwards to the west, and from time to time revealing strange stone edges and stone blocks; immediately, the beautiful scenery gathers in one area, with countless caves and pits, and the scenery in them is endlessly rich and varied.