The Chinese Great Wall

The Chinese Great Wall that is longer than previous estimates. The first survey said which was announced to ensure that long ancient wall.
Government-mapping study for two years found that the wall is 8850 km long. In fact, the length of the wall is usually referred to around 5000 km. Previous estimates based on the long historical record.
The government media said, infra red and GPS technology help to mapping some areas that hidden by a sandstorm. The project found that the wall along the 6259 km, 359 km as defensive ditch, and 2232 km as natural defensive such as hills and rivers. Studies conducted by the Cultural Heritage Institute and Bureau of Surveys and Mapping.
The experts said the walls of the newly discovered built by Ming Dynasty period (1368-1644), and extends from the Hu mountains in north Liaoning Province to the Jiayu rift, Gansu Province in western China.

The project will continue until 18 months to map out part of the wall that built during the Qin Dynasty (221-206BC) and Han Dynasty (206BC-9AD). The wall which is the largest man-made building in the world, built to protect the northern border of the Chinese empire.
The archeologists have been lobbying for the survey is to provide experts with accurate understanding of the construction of the wall. In China, the wall is known as the "long wall 10,000 Li".
This Chinese Great Wall is a series of wall and masterpiece that began in the century-5 and the first time linked the Qin Shi Huang around 220 BC. China Wall is included by UNESCO as world heritage site in 1987.