The Leye Tiankeng Group is the largest tiankeng group in the world, with 24 tiankengs distributed in the mountains with an area of less than 20 square kilometers. The Dashiwei Tiankeng, Baidong Tiankeng, and Chuandong Tiankeng have been developed. Among them, Dashiwei Tiankeng is the representative of the Leye Tiankeng Group and the pride of the Leye people. The Dashiwei Tiankeng Group is located in Baiyanjiao Village, Shuaba Village, Tongle Town, Leye County. It was formed about 65 million years ago. It is a little-known secret place, which is dangerous, strange, steep, majestic, beautiful and beautiful. It is a rare tourist wonder in the world. After a comprehensive investigation and demonstration, Professor Zhu Xuewen, President of the Cave Research Association of the Geological Society of China, called the Dashiwei Tiankeng in Leye County a "tiankeng museum" and a "world karst resort".