《徐霞客游记·粤西游日记十六》
依照指点的路向西北上走，就见草丛荆棘中果然有一个洞穴，只容得下一个身子，可下坠十分深，俯身下瞰洞中，下面深三丈多，就是北面石崖僧房对望之处了。
依所指西北上，则莽棘中果有一窍，止容一身，然下坠甚深，俯而瞰之，下深三丈余，即北崖僧栖所对望处也。
We headed northwest according to the direction and sure enough saw a cave among thorns and bushes. It only allowed one person to go through, but it was very deep. After carefully looking down, we realized the cave was over 10 meters deep and was facing the monks' houses at the north cliff.