Location: 75 kilometers southwest of Dunhuang
Description: The Yangguan Pass, also known as the Southern Pass, sitting 75 kilometers southwest of Dunhuang, originally built by Emperor Wu as one of two most important passes protecting in the Hang Dynasty. The other one is the Great Wall of Han Dynasty.
To certain extent, Yangguan Pass has been ruined with numbers of sections buried in the shifting sands after thousands of years. As a result, it is hard to have any walls in sight, with the only visible sections being the foundations of some of the walls. To the south of the mound is an expanse containing millions of pieces of broken tile over an area of twenty square kilometers, some of the last remaining evidence of civilization here.