《徐霞客游记·滇游日记四十五》
从这里越上去越陡峻，路越窄，曲曲折折作出 之 字形往北走二里，就向西绕过望台南边的山嘴。
于是愈上愈峻，路愈狭，曲折作 之 字而北者二里，乃西盘望台南嘴。
From here, the steeper the slope, the narrower the road, and it zigzagged into a "U" shape for two miles north, then circled west around the mountain edge south of Wangtai.