《徐霞客游记·滇游日记十》
又顺着东边的山麓往北走，抵达北岭下，河流被北岭阻扼，往西绕着沟壑流去，道路仍然往北上岭。
复循东麓而北，抵北岭下，川为岭扼，西向盘壑去，路乃北向陟岭。
Following the foothills to the east and going north, I reached the foot of Beiling. The river was blocked by Beiling and flowed west around the gully. The road still went north up the ridge.