Dashiwei Tiankeng (naturally formed pits) group in Leye County, Baise, Guangxi Province has the top Tiankeng in the world. The Tiankeng is rare, unique, dangerously steep, magnificent, glorious, elegant and has great touristic value because of its unique environment. Of the 26 Tiankeng, 7 Tiankeng including Dashiwei, Dengjiatuo, Datuo, Chuandong, Baidong, Shenmu and Ladong have been ranked as world class. The unique karst landforms have won it the honors of being a Global Geopark, an Exploration Base of International Caves and Karst Expedition, National AAAA Scenic Spot, Chinese National Geopark, Chinese National Forest Park, Chinese Scientific Survey and Expedition Base for Teenagers and Chinese Home of Orchid. In addition, it is honored as "World Tiankeng Museum".

The Buliu River Valley is 16.9 kilometers long. Tourists can drift on the river and go sightseeing here. It is honored as "Top river tour in western Guangxi" and also has the good reputation of being a "vegetable kingdom and bird's paradise". Buliu is the ecological tourist attraction for floating and sightseeing that tourists from far and near yearn for most. When taking a bamboo raft and floating downstream along the river, you can see a natural stone arch bridge located here, which is called "Fairy Bridge" by local people. The span of Fairy Bridge's arch is 177.14 meters and the bridge is 19.3 meters wide and 280 meters long. The thickness of bridge is 78 meters and total height is 165 meters, including the height of arch which is 87 meters. Like a giant dragon, the bridge crosses over the river, creating a naturally extraordinary scenery and great magnificence. It is the largest and most beautiful natural bridge over river in the world and it has extremely high ornamental value.

The Chuandong Tiankeng is polygonal and surrounded by 6 mountain peaks. It is the Tiankeng with the largest number of mountain peaks in Dashiwei Tiankeng Group, Leye County and one of the six extra-large Tiankeng in the world. The average depth of the Tiankeng is 175 meters and the largest depth is 312 meters. The volume is about 11.7215 million m3. There is a karst cave - Chuandong--that is directly connected to the bottom of the Tiankeng in the southwest, for which the Tiankeng got its name. It is the only Tiankeng in Dashiwei Tiankeng Group where tourists can directly enter the bottom through a karst cave. The cave is 202 meters long, 20 - 28 meters wide and 9.5 - 23.5 high. There is a small skylight at the top of the hall-like cave at the southwest end at the Tiankeng's bottom. The skylight is embedded at the top of the cave like a crescent moon, creating the marvelous spectacle of "Angel's Kiss". The light cross casts from 108-meter height, setting off the spaciousness and hollowness of the cave hall which makes people utter sighs of admiration. There is a karst cave, subterranean river, light cross and primeval forest in this scenic spot, so it is an ideal destination for you to seek for tranquility and enjoy the wonderful scenery.

Dashiwei Tiankeng Group in Leye County has the top Tiankeng in the world. The Tiankeng is rare, unique, dangerously steep, magnificent, glorious, elegant and has great touristic value. Of the 26 Tiankeng, 7 Tiankeng including Dashiwei, Dengjiatuo, Datuo, Chuandong, Baidong, Shenmu and Ladong have been ranked as being world class. The unique karst landforms have won it the honors of being a Global Geopark, an Exploration Base of International Caves and Karst Expedition, National AAAA Scenic Spot, Chinese National Geopark, Chinese National Forest Park, Chinese Scientific Survey and Expedition Base for Teenagers and Chinese Home of Orchid. In addition, it is honored as "World Tiankeng Museum".