Two Han passes on the western routes
Yumen Pass and Yangguan guarded different approaches west of Dunhuang. Their earthworks, beacon lines and associated remains recall the Han frontier and the routes that crossed the Hexi Corridor.
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Yumen Pass and Yangguan guarded different approaches west of Dunhuang. Their earthworks, beacon lines and associated remains recall the Han frontier and the routes that crossed the Hexi Corridor.