Heishanvalley located in wansheng is 75 miles 120 kilometers away from chongqing 97 of the area is covered by original forests as an ecological scenic area it is consist of valleys gorges karst caves waterfalls forests and streams as one of the best preserved natural scenic area it is also called the wildlife genome bank of chongqing and guizhou by some experts chongqing heishan valley black mountain valley tour covers a distance of 4 miles 6 kilometers of plank roads and fl