Introduction to the West Bank Crocodile: Changlang Mountain on the west bank of Tianchi Lake is said to have been transformed by a crocodile, hence the name "Crocodile Mountain". The crocodile's head faces south and its body faces north. The crocodile's back is an arc-shaped gentle peak. The crocodile's feet are inserted into the lake. The crocodile's tail is the aforementioned "crocodile dam".