Chongqing Yunyang Longgang National Geopark, National AAAAA-level tourist attraction, National Geopark, 2016 National Day "the best tourist service scenic spot", is called the last "Shangri-La" of the Yangtze River Three Gorges by travelers, and is known as the "Xiaohuashan" of Chongqing edition by outdoor enthusiasts. Yunyang Longgang Scenic Area is located in the southeast of Yunyang County, Chongqing, close to Lichuan City, Hubei, integrating Tiankeng, Canyon, Karst Cave, Alpine Grassland, Forest, Tujia style. The main attractions are Longgang Tiankeng, Yunduan Covered Bridge, Longdong Scenery, Long Grotto Gorge, Lushan Grassland, The ancient Great Wall of Hecao, the site of the ancient road of Xiangyangguan, and the lake of the dam. Among them, the depth of the dragon tank Tiankeng is 335 meters, ranking third in the country and fifth in the world. The wall of the dragon tank Tiankeng is arched by cliffs and the tilt is nearly 90 degrees. This straight up and down form is extremely rare in the world and enjoys the reputation of "the first cylinder in the world". The scenery is beautiful and the scenery is beautiful, it is worth a visit.