Leye Tiankeng Group, the largest tiankeng group in the world, with 24 sinkholes distributed in a mountainous area of less than 20 square kilometers. It has developed Dashiwei Tiankeng, Baidongtiankeng and Chuandongtiankeng, etc. Among them, Dashiwei Tiankeng is the representative of Leye Tiankeng group and the pride of Leye people. Dashiwei Tiankeng Group is located in Baiyanjiao Village, Huaba Village, Tongle Town, Leye County. It was formed about 65 million years ago. It is a little-known secret land, combining danger, wonder, precipitousness, grandeur, beauty and beauty, and is a rare tourist wonder in the world.
Leye County has world-class brand tourism resources represented by Dashiwei Tiankeng group. After scientific investigation and verification by experts from more than 10 countries, such as China, the United States, Britain, Japan and France, 28 tiankeng have been found within 20 square kilometers, and the number and distribution density of tiankeng is the only one in the world. Leye County also has the world’s most magnificent water natural stone arch bridge – Buliuhe Xianren Bridge, as well as Bailang Grand Canyon, Wutai Mountain primeval forest and other scenic spots. The Tiankeng Group of Dashiwei in Leye has been awarded the titles of “National Geological Park”, “National Forest Park”, “International Karst and Cave Exploration Scientific Base”, “Chinese Youth Scientific Investigation and Exploration Base”, “World Geological Park” and so on.