《徐霞客游记·游太华山记》
泉水从西山腹部穿出，外面分为三道门，每道门只有盎那么大，中间是空洞，但全是倾斜的巨石，不能进去。
泉自西山透腹出，外分三门，大仅如盎，中崆峒，悉巨石欹侧，不可入。
The spring water emerges from the abdomen of Xishan Mountain. Outside, it is divided into three doors. Each door is only as large as a jar, with a hollow in the middle, but all of them are inclined boulders and cannot enter.