长城词典·马道长城城墙顶部地面，宽4～6米，可供守城兵马通行。一般采用两层以上平砖加白灰铺砌。 Great Wall dictionary·Riding TrackOn the top of the wall，there is a Riding Track which is 4 to 6 meters wide where watchmen and horses could take in ancient time. It is usually paved with two layers of flat bricks tiled with lime.
