《徐霞客游记·滇游日记二十三》
山北面有很深的峡谷，从后山环夹而出，涧流嵌在底下，这是崖场。
山之北，有峡甚深，自后山环夹而出，涧流嵌其下，是为崖场。
There is a deep canyon in the north of the mountain, which flows out from the back mountain and becomes a valley stream below, which is Yachang.