The Underground Milky Way Tourist Area is located about 6 kilometers northwest of Mengyin County, Linyi City. It is a natural underground wonder discovered in Shandong Province, with many attractions such as the cave rafting adventures, Taoyuan Ancient Village, Tianyue Lake Wetland Water Park. The cave was formed about 120 million years ago, and has a total length of more than 10,000 meters, divided into upper, middle and lower layers. The upper layer of the cave is a stalactite cave, with all sorts of different stone shapes in the cave, all lit up like a fairyland. During the development of the cave, more than 40 species of ancient animal fossils were discovered, including saber-toothed tiger teeth, wild boar leg bones, bear skulls, etc., all of which are comparatively rare.