《徐霞客游记·黔游日记七》
追寻它的意思，是由于洞口上方崖壁顶端的洞穴里放有一尊观音像的原因。
征其义，以门上崖端有置大士像于其穴者也。
In pursuit of its meaning, it is because there is a Guanyin statue in the cave at the top of the cliff above the entrance of the cave.