2. Jingxi Tongling Grand Canyon; Tongling Grand Canyon in Jingxi is located in Jingxi City, Baise City, Guangxi Zhuang Autonomous Region, with a total length of 3.8 kilometers. It is a national AAAA-level tourist attraction. Tongling Grand Canyon in the west of Beijing is connected by Tongling Gorge, Nianba Gorge, underground river and tunnel, which is grounded and elegant. The canyon is steep and deep, with huge stalactites hanging upside down, old trees and vines covering the sky, and mysterious caves dotted with deep pools. Tongling Grand Canyon in the west of Beijing was originally a blind valley. Due to the influence of crustal movement, it was transported from heaven to earth, forming a big sinkhole with steep cliffs and spectacular momentum.
3. leye county Dashiwei Tiankeng Group Scenic Area: leye county Shiwei Tiankeng Group Scenic Area is located in Leye County, Baise City, Guangxi Zhuang Autonomous Region, with a volume of about 80 million cubic meters, and is a national AAAA-level tourist scenic spot. There are more than 20 sinkholes in Shiwei Tiankeng Group Scenic Area in leye county, which is the largest sinkhole group in the world. The developed sinkholes include Dashiwei sinkhole, hole-piercing sinkhole and Baidong sinkhole, among which Dashiwei sinkhole is the representative of Dashiwei sinkhole group in leye county and the pride of leye county people. Leye county Shiwei Tiankeng Group Scenic Spot is a rare tourist wonder in the world, which combines danger, wonder, precision, beauty and beauty.