Modern technology maps new sections of the Great Wall of China
Tuesday, April 21, 2009 Using infrared laser rangefinders and global positioning system modern technology, a survey released that the Ming Dynasty section of the Great Wall of China is 8,851.8 kilometers (5,500 mi), some 2,551 kilometers (1,585 mi) longer than previous estimates. Historical accounts put the wall’s length around 5,000 kilometers (3,107 mi), however it wasContinue Reading