Three Gorges primarily famous for its scenery, the Three Gorges region is also historically and culturally important in China. Many settlements and archaeological sites are in danger of being submerged by the rising reservoir of the Three Gorges Dam. Due to the lithological conditions of its different regions, the valleys of the Three Gorges are narrow in some areas and broad in others. Most narrow valleys occur in regions where there is limestone, which is relatively hard and resists erosion. However, water can flow along deep vertical fractures, eroding underneath. As the limestone bed is gradually undercut, parts of it fall into
Three Gorges Reservoir Region Three Gorges Reservoir Region Three Gorges Reservoir Region, including 25 county-level divisions of Chongqing municipality and Hubei province, is the region directly or indirectly involved in the submersion of the water storage of the reservoir region of the Three Gorges Dam. The Three Gorges Reservoir Region is located in the upstream of the Yangtze River at the boundary of Chongqing municipality and Hubei province with the area of 59900 km² and with the population of 16 million. The Three Gorges Reservoir Region stretches along the Yangtze River from Jiangjin District of Chongqing to Yichang City of Hubei, which is very