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 neither a galloping horse nor a flight can run faster than a boat. Yuan Shansong () of the Eastern Jin dynasty wrote a "Record of Yichuan's Landscape", which depicts the Three Gorges' grandeur. He wrote, People were always warned literally or orally of the Gorges' swift currents, saying they are horrific, and no one praised the local landscape [as] beautiful. It's [not] till I came to the site that I felt quite gleeful and started to understand seeing is believing. The overlapping cliffs, the elegant peaks and the grotesque structures, they all constitute the scenery far from expression. The lush,