There are two parking lots in the Longgong scenic spot, one is the tourist service center and the other is the Xuantang scenic spot. Tickets (including boat tickets) and sightseeing tickets (20 yuan per person) must be purchased in the Xuantang scenic spot, and a sightseeing bus (07:30-18:40) must be taken to the tourist service center. After entering the gate (there will be sedan driver, 120 yuan per person per trip, only to the sightseeing elevator), walking for 15 minutes, you will see Longmen Falls. Longmen Falls is more than 50 meters high and 26 meters wide. It is the largest karst waterfall in the cave in China. Next to it is the sightseeing elevator (35 yuan round trip), 90 meters vertical (about 30 stories high), which is the fastest way to Tianchi (or choose to walk for 20 minutes). Tianchi, also known as Shuilongtan, is 220 meters long, 50 meters wide and 28 meters deep. Because of the widening of the river body, the underground river water continuously dissolves rocks, resulting in the roof collapse and forming the Tianchi. The longest water-soluble cave in China, Longgong, can be reached further. The length of the Dragon Palace is 840 meters and the length of the Dragon Palace is 420 meters. As soon as you enter the Dragon Palace, you have a guide who can understand the mythological stories happening in the water cave. Although Erjin Dragon Palace has no guide, it can stay on board and return to the original way. Because it is to help the old and bring the young to travel, choose the original way back. Finally, after arriving at the parking lot of Xuantang Scenic Spot, we walk to the back and look down at "Longzitian" from top to bottom. This is the largest single dragon character in the world. It is very dazzling under the sunshine. Generally speaking, it is a scenic spot with too many money traps, and the scale of karst is relatively general, mostly artificial landscape. If you are near the Huangguoshu scenic spot, you can come to see it in time, but there is no need to come to visit the scenic spots.