【描述】甘肃阳关是古丝绸之路南道的重要关隘，始建于汉代，位于甘肃省敦煌市西南的古董滩附近。
        
         Yang Pass is an important gate for the south route of the Ancient Silk Road. It was built in the Han Dynasty, located near Gudong Shoal in the southwestern part of Dunhuang, Gansu.