《徐霞客游记·粤西游日记三十五》
刚出村，望见北边崖壁半中腰，有个洞高高隆起，洞口向东，非常高峻深远，不可攀登。
甫出村，北望崖壁之半，有洞高穹，其门东向，甚峻迥，不可攀。
Had just left the village when saw a cave half-way up the north-facing cliff; the entrance to the cave faced east, and was very high and deep, and impossible to climb.