Transportation: Dunhuang Han Great Wall is actually together with the Yumenguan ruins. Here you can visit three places, including the Han Great Wall ruins. It is about 70 kilometers away from Dunhuang, or go with a group, or charter a car. Recommended reason: Dunhuang has many sites of Han Great Wall: alkali pierzi to Mamitu Han Great Wall, Yumenguan to Yangguan, Yangguan to Danghekou, Mamitu to bent pier, etc. With the passage of more than 2,000 years and the destruction of natural wind and rain, some have been leveled. We saw that the Danggu Tunnel area in the west of Yumenguan was well preserved. It is 3 meters wide and 3 meters high, which is basically the most complete section of the Great Wall in China's Han Dynasty. The Great Wall is a very great creation of ancient Chinese working people. In the West Han Dynasty, in order to resist the invasion of Xiongnu, strengthen the construction of border plugs, and strengthen trade with Central and Western Asia, starting from Lingju (now Yongdeng), through the Hexi Corridor Zhangye, Jiayuguan, Yumen and other places, to Dunhuang West Lake Mami built the Great Wall. And "pavilion" is what we say "tunnel", repair to the ancient country of Luobu Bolou Lan. This is the structure of the Han Great Wall of Han Great Wall without masonry, built from local materials, this land grows a large area of red willow, reed, rob hemp, poplar trees and other plants, when building the Great Wall, with the branches of these plants as the foundation, sand and stone and reed layer by layer.