Introduction to Tiantan: The Zibai Mountain Tiankeng is called "Tan" among the people. Since ancient times, there has been a saying of "seventy-two caves and eighty-two tanks". Located on the top of Zibai Mountain above 2,600 meters, it is a unique mountain landscape in the country and has been proven by experts to be the largest Tiantan community in China. Its main characteristics are: it is located on the top of a mountain, shaped like a basin, with a depth generally ranging from tens to hundreds of meters. There are many vertical "bottomless pits" or sweet and rich springs in the center. There are many exotic flowers and plants in the tiankeng, but few trees. People divide these tiankeng into Changqing Tan, Guodi Tan, Shepherd Tan, Woyun Tan, Ecstasy Tan, Fritillaria Tan, etc. according to their characteristics, and endow them with beautiful and moving legends. Zibai Tiankeng, a wonder in the world's geological history, is waiting for you to uncover its mysterious veil.