《徐霞客游记·粤西游日记十二》
那座山在积水的西南，与东面山峡的南峰东西相夹形成积水塘。遥视崖顶，都有微小的石痕，自南往北，可以上登，唯有北洞却在特别高峻的悬崖绝壁上，似乎不能登上去。
遥睇崖端，俱有微痕，自南而北，可以上跻，惟北洞则崭然悬绝，若不可阶焉。
The mountain was on the southwest of the flooded area, and it and the southern peak of the mountain canyon on the east formed the flooded pond. When looking at the top of the cliff from a distance, there were small stone marks. It was possible to go up from the south to the north, but only the northern cave was on a particularly steep cliff, and it seemed impossible to climb up.