《徐霞客游记·滇游日记十二》
原来川流西岸的山脉，南部起自安宁州圣泉西边的龙山，是从其分支延伸而来，到这里耸立为陡峭的屏嶂，像屏风一样逼向川流，又往东北延伸下去形成此脊，从而横扼川流；川流东岸的山脉，东部起自牛圈哨岭，是从其分支延伸而来，到这里也耸立为陡峭的屏障，也像屏风一样逼向川流，又与西岸的山脊对峙并挟持川流。
盖西岸之山，南自安宁圣泉西龙山分支传送而来，至此耸为危峰，屏压川流，又东北坠为此脊，以横扼之；东岸之山，东自牛圈哨岭分支传送而来，至此亦耸为危嶂，屏压川流，又西与此脊对而挟持之。
The mountain range on the west bank of the river arose from the Dragon Mountain on the west of Anningzhou Shengquan, which was an extension from its branches, it stood here as a steep screen, pushing towards the river like a screen, and continued towards northeast to form this ridge, which blocked the river; the mountain range on the east bank of the river arose from Niuqiaoshao Ridge, which was an extension from its branches, it also stood here as a steep screen, pushing towards the river like a screen, and stood opposite to the mountain ridge on the west bank, squeezing the river in between.