居庸关位于北京通往宣化、大同的一条长达40公里的沟壑之中,是古代长城的一个重要关口。特别是明朝永乐年间定都北京以后,又将皇陵安置在京城北部的天寿山地区。居庸关不仅担负着守卫京师北大门的重任,同时又成为守护明朝皇陵的北部屏障。 由于居庸关周围的大山上多为苍紫千重的石峦, Juyongguan is located in Beijing to Xuanhua, Datong, a 40-km gully, is an important mark of the ancient Great Wall. In particular, during the Yongle years of the Ming Dynasty, capital cities were set up in the Tianshou Mountain area north of the capital. Juyongguan not only shoulder the important task of guarding the gate of the capital, but also become the northern barrier to guard the Ming imperial mausoleum. Due to the vast mountains around the Juyongguan numerous pale stone ridges,