Kaiyuan cave is called the first cave in Shandong, is a natural formation of karst landform, a variety of stalactites and mineral rocks with colorful lighting effects to form a variety of wonderful landscapes, commendable in each major attractions have free explanation. There is a free battery car to the top of the mountain after the cave. You can play slings and rafting. There are waterfalls, small bridges, ornamental fish, and small children's playgrounds along the way. During the National Day, there were not many people, and the persimmons on the mountain were very beautiful. The experience is very good, the scenery is good, it is recommended,