Tiankeng introduction: There is a "tiankeng" in the canyon, which is known as the most strange pit in the Dabie Mountains. The pit is more than 50 meters deep and the diameter of the pit is 70 meters. The "tiankeng" comes from between the mountains on three sides. It collapsed, with a depth of nearly 200 meters. The surface of the collapse was square. The walls of the pit were extremely dangerous and steep, just like cutting with a knife and an axe.
Attraction