《徐霞客游记·粤西游日记十七》
进入洞口，有岩石突立洞口右侧，蹲卧着好像牛而颜色是青的，它背上又高高突起一石，圆得像老人的头。
入门，有石突门右，蹲踞若牛而青其色，其背复高突一石，圆若老人之首。
Entering the entrance of the cave, a rock protrudes on the right side of the entrance, where it crouches like a cow and is green in color. On its back, there is a high protruding stone, round like an old man's head.