《徐霞客游记·粤西游日记三十五》
神庙之后，就是潭中的水捣入石洞之处，这个洞口向南，非常高，望洞中空荡荡的，不用木筏漂浮，是不能径直进去的。
神祠之后，即潭中之水捣入石门处，其门南向，甚高，望其中崆峒，莫须浮筏以进，不能竟入也。
Behind the temple, there is a place where the water in the pool pours into the stone cave. This hole faces south and is very high. Looking into the cave, it is empty. It is not possible to go straight in without floating on a raft.