Dashiwei Tiankeng is very beautiful. In fact, the essence is the Tianzhou and skylight. Tianzhou is a glass trestle bridge. The top of the West Peak is extended to the edge of the pit and the rock is suspended. It is majestic and faces the 400-meter deep pit. Don't look down when you walk forward. Otherwise, your legs are really soft and afraid of heights. I dare not move. The other end of the boat is extended to the parking lot. The parking lot is repaired for a day and the pool is unique. Worth a look. The skylight is a cave on the cliff of the Tiankeng. The window is 50 meters wide and 35 meters wide. It is about 200 meters down from the entrance of Dongfeng parking lot to reach the skylight. The cave in the skylight preserves the original state of the ancient sandstone and soil layer of the underground river bed, and the attitude of the ancient underground river flow can be seen.