Lying in 7 km northwest of Jiayuguan, this Great Wall was built in Ming dynasty in 1539. It was originally 1500 m but only 750 m of it was remained. Because 231 m of the Great Wall scrambles on the ridge of the mountain it is called Overhanging Great Wall. From the upper tower high on the ridge, you can get a whole view of the desert, the oasis and the snow peaks.