Map Great Wall China - Layers of Dynasties and Era's
A Schematic Map of China and East-Asia, with a super-imposed schematic of the various layers of the Great Wall of China.
Features Pre-Qin Dynasty Wall, Qin Dynasty Wall, Western Han Great Wall of China, the (Northern) Jin Dynasty Great Wall and finally the Ming Dynasty Great Wall as mainly remains today.
Main Features are Names and locations location of Passes on the Great Wall of China, outer layer and inner layer. Includes Shanhai Pass, Huangya Guan (Yellow Cliff) Pass, JiYunGuan Pass, Ningwu Guan Pass, Pingxin Guan, YaMen Guan Pass, Pian Guan Pass, JiaYuGuan pass, YuMen Guan Pass (Jade Gate) and Yang Guan Pass.
Further included for reference are City names, geographical features of landscape and main mountain ranges. Updates occur several times a year adding new pass locations and photo-virtual tours of Passes throughout China.
As recently as 1998 AD archaeologists working in Xinjiang Autonomous Region found a wall that ran from Yumen Pass (Jade Gate) near Dunhuang in Gansu to the northern edge of Lop Nur, skirting one of the trajectories of the Silk Road. As with other sections of the Great Wall in the far west including the Yumen Wall remenants, these were earthen ramparts made of rammed yellow sandy soil and jarrah branches. There is little or no doubt that this is part of the Great Wall - most lilkely dating to the Tang Dynasty Era, as it comprises a complete defensive network. This discovery
extended the length of the Great Wall by 500 km, to bring the wall to a length of 7,200 kilometers.