Hang a wall in the jiayuguan pass eight kilometers north stone gap on the north side of north slope in Montenegro. In the eighteenth year of jiajing 1539, in order to strengthen the defense jiayuguan, the `state soldiers prepare lihan outside the dark wall, gorge south hill began, made a 15 km long prison flaky clip wall. On July 11, 2015 in jiayuguan

圖片編號： 105247381
拍攝者： shanshuijvlaoda