Introduction to Tianniu Waterfall: Tianniu Waterfall is located on the top of a small hill to the left of the Tiankeng. From a distance, the mountain shape looks like a cow looking back. Legend has it that this cow was released by an immortal and often went to the foot of the mountain to help local mountain people cultivate their land. It was called "Tianniu" by the mountain people, hence the name "Tianniu Rock". This waterfall gets its name because it is closely connected to the rock.