Badaling section of the Great Wall is within Yanqing County

  Badaling section of the Great Wall is within Yanqing County, one of the two counties in Beijing. The wall is about 80 kilometers northwest from downtown Beijing. Dadaling Grat Wall is actually a mountain pass of the Jundu Mountain. It is recorded that the Badaling Great Wall was built to protect the Juyongguan Pass ( Juyongguan section of the Great Wall ) on its south, further protecting the city of Beijing. Badaling is an ancient military defense project. It is about 1,000 meters above sea level.

  The Great Wall originally functioned as a fortification. As early as the Qin Dynasty (221BC-206BC), Qinshihuang, the first emperor of Qin Dynasty unified the whole nation and began to build the wall to protect China's borders from the intrusion of the northern nomadic tribes. Most parts of the preserved Badaling Great Wall were built and reinforced during the Ming Dynasty to defend the capital against the intrusion of these Mongolian people. The structure of the wall consists of huge bar-stones and bricks. The inside has been formed by tampering earth and small stones, which makes the wall very firm and strong. Internally, the wall is about six meters (20 feet) wide, which would allow horses to gallop five abreast. A number of small holes have been drilled on the wall to allow archers to shoot arrows. There is a barrel-drain and a moat both inside and outside the wall. In a word, military fortification has been paramount in the consideration of every wall detail.
  Badaling Great Wall was an early part of the Great Wall open to tourists. He has developed tens of millions of tourists from both home and abroad. More than 370 foreign leaders and celebrities have visited there .
  Badaling Great Wall is situated in Yanqing County, more than 70 kilometers (43 miles) north of Beijing. This is the most well-preserved part of the Great Wall, built during the Ming Dynasty (1368-1644). In this section, with an average altitude of 1000 meters (3282 feet) is the outpost of the Juyongguan Pass. Mountain slope is very steep and winding road. These features made it a military fortress. Badaling Great Wall of China as a strong dragon winding its way along the mountain ridges.