Wu Gorge is forty-five kilometers long, extending from the mouth of the Daning River in Wushan County, Chongqing Municipality in the west to Guandukou in Badong County, Hubei Province in the east. Also known as the Great Gorge, it is famous for its deep valley and quiet beauty. Wu Gorge is a long and neat gorge divided into two sections -- the Golden Helmet and Silver Armor Gorge and the Iron Coffin Gorge.