Datian Pond and Xiaotian Pond were both craters from which lava once flowed. They were then eroded by the rain and formed the alpine lakes. There are still a lot of death trees standing in the ponds that create a special original sight. Datian Pond is in the middle of Dansen Mountain, Wangana Peak and Aoben Peak, which are all old forests with complete ecosystem of tropical rain forests including the numerous kinds of insects and birds.