《徐霞客游记·滇游日记二十二》
山峰南侧中，有一片龙潭，一百多亩大，一直逼近西山，西山的石崖，插入龙潭往下延伸。
其南腋中，有龙潭一围，大百余亩，直逼西山，西山石崖，插潭而下。
In the center of the south face of the mountain, there is a lake called Longtan, which is over a hundred acres in size and reaches all the way to the foot of Xishan. The stone cliff of Xishan juts out into Longtan like an extension.