《徐霞客游记·粤西游日记二十九》
洞口朝向东北，高二十丈，洞口以外就见两旁石崖笔直下坠到山麓，便成为水洞的洞口；洞口以内，洞底就向中央下陷，也是一直下坠到山的底部而通向水洞之内。
其门东北向，高二十丈，门以外则两旁石崖直坠山麓，而为水洞之门；门以内，则洞底中陷，亦直坠山底而通水洞之内。
The cave entrance faces northeast, is twenty feet high, and looks out over two vertical stone cliffs that drop down to the base of the mountain to form the entrance to the water cave. Inside the entrance, the floor of the cave slopes down into the middle, also dropping all the way to the bottom of the mountain and leading to the inside of the water cave.