《徐霞客游记·粤西游日记二十》
洞里面下洼但洞中十分平坦，唯有洞壁上开启着洞口，没有深沟高冈的升降，前后两个洞口，都高悬在上。
是洞内洼而中甚平，惟壁窦閤é辟，无沟陀升降，前后两门，俱高悬于上。
Inside the cave was a dip, but the cave is very flat, with only the entrance to the cave opening on the cave wall, with no ups and downs of deep ditches and high hills, and the two entrances to the front and back are both high above.