Demon City (Mogui Cheng)

On the endless Gobi Desert, there suddenly appear countless criss-crossing earth mounds in different heights, like ancient castles. It is said that screaming and shouting sounds can be heard at night when wild wind passing through the earth mounds with sands and stones. In fact, the Demon City is inside the typical Yadan Landform (a wind erosion physiognomy formed in dry areas) Area, which was formed because of dry climate and strong wind. As early as more than 100 million years ago (in cretaceous period), there was no Demon City but a huge fresh water lake where there lived thick plants and ancient animals such as Wuerhe Stegosaurus, Plesiosaurus, Dinosaur and Junggar Pterosaur-a paradise for the water creatures. At that time, extensive lake facies stratums were formed. Then the lake gradually rose to be become the land and the dinosaurs, fossils. Finally, typical Yadan Landform was formed in Demon City.