29.4339°N 107.8013°WThe Three Natural Bridges are a series of natural limestone bridges located in Xiannüshan Town (Chinese: [[:zh:仙女山镇|仙女山镇]]), Wulong District, Chongqing Municipality, China.[1] They lie within the Wulong Karst National Geology Park, itself a part of the South China Karst-Wulong Karst UNESCO World Heritage Site.[2] In Chinese, the bridges are all named after dragons, namely Tianlong Qinglong and Heilong .[3] [4]
Spanning the Yangshui River, a tributary of the Wu River, the bridges are at the centre of a 20km2 conservation area which also includes:
Given that the distance between the upper end of the Tianlong Bridge and the lower end of the Heilong Bridge is only 1500m (4,900feet), these are not the longest natural bridges. Between the bridges lie the Qinglong and Shenying tiankengs which have a depth of 276–285 metres and a circumference of 300–522 metres.
| Height | Thickness | Width | Clearance | Span | ||
|---|---|---|---|---|---|---|
| Tianlong Bridge (天龙桥) | 235m (771feet) | 150m (490feet) | 147m (482feet) | 96m (315feet) | 34m (112feet) | |
| Qinglong Bridge (青龙桥) | 281m (922feet) | 168m (551feet) | 124m (407feet) | 103m (338feet) | 31m (102feet) | |
| Heilong Bridge (黑龙桥) | 223m (732feet) | 107m (351feet) | 193m (633feet) | 116m (381feet) | 28m (92feet) |