《徐霞客游记·粤西游日记二十九》
龙巷村东北山坞中的上洞，在向武州城东北七里，就是百感岩西面的山崖，但是道路由龙巷村往东进去，山向北转盘绕成山坞，枯榕江在北面分流，大江分流捣入坞中，山崖回绕山坞断绝，向东坠入洞穴中，而岩洞高临在它上方，洞口向西，左右都是危崖，而下临湍急的水流。
龙巷东北坞上洞，在向武州东北七里，即百感之西崖，第路由龙巷村东入，北转盘旋成坞，枯榕北枝大江分捣其中，崖回坞绝。坠穴东入，而洞临其上，其门西向，左右皆危崖，而下临激湍。
The upper cave in the mountain depression northeast of Longxiang Village is seven miles northeast of Xiangwuzhou City. It is on the cliff west of Baiganyan, but the road leads east from Longxiang Village. The mountain turns north and winds into a mountain depression. The Kufeng River divides into tributaries in the north, with the main river dividing and flowing into the depression. The cliffs surround the mountain depression and cut it off, plunging into the cave to the east, while the cave is high above it, with the entrance facing west and dangerous cliffs on both sides, and the rapids below.