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Associated PressBEIJING (AP) — The Great Wall of China is even greater than once thought.
A two-year government mapping study has uncovered new sections of the ancient Chinese monument that total about 180 miles (290 kilometers), according to a report posted on the State Bureau of Surveying and Mapping Web site.
Using mapping technologies such as infrared range finders and GPS devices, experts discovered portions of the wall — concealed by hills, trenches and rivers — that stretch from Hu Mountain in northern Liaoning province to Jiayu Pass in western Gansu province, the official China Daily reported Monday.
The newly mapped parts of the wall were built during the Ming Dynasy (1368-1644) to protect against northern invaders and were submerged over time by sandstorms that moved across the arid region, the study said.
The additional parts mean the Great Wall — which Chinese emperors began constructing 2,000 years ago to keep out Monguls and invaders — spans about 3,900 miles (6,300 kilometers) through the northern part of the country.
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