Three Gorges

The Three Gorges (simplified Chinese: 三峡; traditional Chinese: 三峽; pinyin: Sānxiá) are three adjacent and sequential gorges along the middle reaches of the Yangtze River path, in the hinterland of the People's Republic of China. With a subtropical monsoon climate, they are known for their scenery.
The Three Gorges—comprising the Qutang, followed by the Wu, and finally the Xiling gorges—span 193 miles (311 km), beginning at Baidi City of Chongqing, in the west and ending at Nanjing Pass, at Yichang City, Hubei Province, in the east, between which are the Fengjie and Wu Mountains of Chongqing, as well as Badong, Zigui, and Yichang of Hubei Province.
After arriving at Yibin (宜宾), in Sichuan Province (四川), the Yangtze River (长江) flows from Jiangjin (江津), of Chongqing Municipality (重庆), to Yichang (宜昌), of Hubei Province (湖北); and this section of the river is called Chuanjiang (川江), or "the river of Sichuan". In the past, it was the only waterway that connected Sichuan and Guizhou to China's eastern area. (The Wu River (乌江) flows past Guizhou and empties into the Yangtze River at Fuling (涪陵), of Chongqing Municipality). Downstream, the Chuanjiang passes the Wu Mountains—the second ladder of the Chinese mainland—which form the Qutang Gorge (瞿塘峡), the Wu Gorge (巫峡), and the Xiling Gorge (西陵峡) along the Yangtze River, which is where this area gets its name.
The Three Gorges span from the western, upriver, city of Fengjie, in Chongqing Municipality, to the east, downstream, city of Yichang, in Hubei province. The Three Gorges Reservoir Region is approximately 200 km (120 mi) in length, while the Three Gorges themselves occupy about 120 km (75 mi) within this region: this has attracted global attention to the Three Gorges Dam and changed the culture and environment of the region.
Although it is primarily famous for its scenery, the Three Gorges region is historically and culturally important in China. Many settlements and archaeological sites were submerged by the upstream 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 the river along vertical fractures, forming precipitous cliffs. When the river flows through areas of softer sandstone and shale, which have less resistance to erosion, the erosive effect is increased, carving wide valleys.
There are different theories on how the Three Gorges were formed, but geographers and geologists have generally reached a consensus, believing mountain folding in the east of Sichuan Province and the west of Hubei Province, including the Wu Mountains (巫山), were the outcome of the Yanshanian movement (燕山運動) around 70 million years ago. The gorges run from southwest to northeast, then turn, and from west to east, with terrain lowering gradually from south to north. The western and eastern parts of the area, between the southern mountains and Bashan Mountain (巴山), in the north, are comparatively lower; and in the past, the river flowed to the east through the region. As the crust of the locality continued to rise, the river's erosion intensified, and the Three Gorges were carved.
The natural beauty of the Three Gorges along the Yangtze River has been appreciated for hundreds of years. In the Northern Wei (北魏) dynasty, Li Daoyuan (酈道元) described them in his work, Commentary on the Water Classic (水經注).
Yuan Shansong (袁山松) of the Eastern Jin dynasty wrote a Record of Yichuan's Landscape, which depicts the Three Gorges' grandeur. He wrote,
In his poem Setting out from Baidicheng, Li Bai (李白) depicts this place, saying,
Between winter and spring, the shadows of rocks and woods are reflected in the green pool accompanied by white, swift currents. Cascades plunge and flow across cypresses increasing at extremely high peaks. Clean water, flourishing trees, lofty mountains and luxuriant grasses compose the landscape. When the sun starts to rise or frost falls in the morning, forests and streams are chilly and solemn, and one can often hear monkeys howling from peaks. Their cries sound sad and strange and last in the valleys for quite a while, because of that, local fishers think the Wu Gorge is the longest of the Three Gorges in the east of Sichuan province.
The Three Gorges have renowned scenic spots, such as the Kuimen (夔門), located at the western entrance to the Three Gorges. The cliffs on both sides appear to some as having been cut by knives or axes. Among the Wu Mountains that are located at the northern and southern beaches of the Wu Gorge, one of the twelve peaks is known as Fairy Peak. According to folk tradition, it symbolizes a fairy who assisted Yu the Great in controlling the waters and guiding boatmen. The Xiling Gorge comprises a series of famous gorges, including Military Book and Sword Gorge, Yellow Cow Gorge, and Lantern's Shadow Gorge.
In 1919, after Sun Yat-sen had put forward the concept in the Plan for Industrial Development of his Founding Strategy [zh] (建国方略), experts investigated damming the Three Gorges, but it was not until 1994 that the Three Gorges project officially started.
In 1944, the Nationalist government recruited John L. Savage, the Chief Engineer of the United States Bureau of Reclamation, who came to China and made a 10-day investigation of the Three Gorges. Afterwards, he wrote an enthusiastic report on the prospects of a dam. Construction was started on the first of the dams at Upper Tsing Yuan Tung, but was halted on August 15, 1947, because of the Chinese Civil War.
In February 1958, as the expanded meeting of the Political Bureau of the CPC Central Committee was held at Nanning (南宁), the Three Gorges Project (三峡工程) was discussed for the first time, and fierce disputes broke out. In the end, this project was delayed. Over the following three decades, people continued to discuss it. In the early 1980s, people mentioned it once again, but after repeated discussions and investigations, it was again postponed. On March 6, 1992, a feasibility report was presented at the 5th Session of the 7th National People's Congress (NPC) for discussion and resolution. On April 3 of that year, the NPC voted on a resolution for the dam, and it was passed with an unusually low approval rate for the NPC with only 1767 of the 2633 members (67.11%) voting to support the dam.
The Three Gorges Dam was constructed at Sandouping (三斗坪), Yichang (宜昌) in Hubei Province (湖北), in the middle of Xiling Gorge. On May 20, 2006, the reservoir dam was completed, and the water level quickly reached the initial level of 110 meters (360 ft) above the downstream river. The project was completed by the end of 2008, with a ship lift completed in 2015.
Both the dam and the Three Gorges Reservoir has had a massive impact on the region's ecology and people, involving the mass relocation of towns and villages. The higher water level has changed the scenery of the Three Gorges so that the river is wider and the mountains appear lower. However, the mountains still tower above the river, and the gorges continue to offer views of the surrounding cliffs.
The riverboat companies operating on the Three Gorges are experiencing an increase in demand for river cruises. The increased width and depth of the river permits larger ships through the gorges, and there has been a significant increase in river traffic of all kinds, including bulk cargo and container barges.
After the construction of the Three Gorges Dam was approved, archaeologists were allowed time and resources to carry out rescue work. However, after the dam was built and used to store water, a large number of cultural relics, including hanging coffins and stone inscriptions that cannot be protected, were covered by the reservoir.
31°01′04″N 110°13′43″E﻿ / ﻿31.01778°N 110.22861°E﻿ / 31.01778; 110.22861