《徐霞客游记·粤西游日记十一》
于是下山，顺路出到水塘的西南，它南边山回坞转，另外形成一个壑谷，可洞口无影无踪不能找到。
乃下，随路出塘之西，其南山回坞转，别成一壑，而洞门杳然无可觅也。
So I went down the mountain, following the road to the southwest of the pond, where the mountain turned south to the back, forming another gulch, but the entrance to the cave was nowhere to be found.