Youlong Cave in the Taiping Palace back mountain, walking halfway to the Lion Peak can be seen, the big stone underneath the inscription of the four big words of Laolong Cang, walking up the steps can see the three words of Youlong Cave, here was originally for Laozi, at first called Laojun Cave, because Laozi both toured the dragon, and then changed to Youlong Cave. It's a natural cave, it's dark inside and dare not enter. There are trails outside to the cave's top mixed stone.