《徐霞客游记·粤西游日记三十六》
洞口之内，有岩石相夹高耸成为关隘，它上边建了小屋，也十分幽静爽朗，都是前人修真养性之处。
门之内，有石夹耸成关，架小庐其上，亦甚幽爽，皆昔人栖真之处也。
Inside the cave entrance, there are rocks夹 high and become a pass, and they built a small house on it, which is also very quiet and refreshing. They are all the places where the ancients cultivated and cultivated their nature.