Haiyun Cave, also known as Dragon Cave, is located in the ultra-mount, Song Dynasty to modern cliff inscription group. Sanping three-sided embrace, up and down two holes, left upper for the dry hole, the bottom for the water hole, right stone wall engraved with Song County Governor three Qu Zhao Qingxian book "Haiyun cave" three characters. Stone wall right front of two niches, the first niches for Ding Yanghao seated.The second niche is facing east, inscribed with the word "Qingxia Dong Tian", with Ding Songpo and his friend seated.Two grottoes on the side, and Ding Songpo statue record one side.In addition, there are Xia Zhicheng, Wu Changshuo and other poems carved cliff.Haiyun Cave is of great value to study the cliff sculptures and inscriptions from Song Dynasty to modern times in Yuhang District.