《徐霞客游记·浙游日记上》
北山高耸天外，犹如在背后立起的一道倚天屏障，我们的船背着它向东南方向行。向旁人询问、 三洞在哪里？  回答说： 在北面。 又问： 府城在何处？  却回答说： 在南面。 
则曰： 在北。 问： 郡城何在？ 则曰： 在南。 
To the north was a mountain soaring to the sky, like a screen of Heaven standing at my back; our boat passed it heading southeast. I asked the other passengers, “Where are the Three Caves?”—and they answered, “To the north”. I asked again, “Where is the prefectural city?”—and they answered, “To the south”.