Although you can't tell at the distance, but this is an unrestored section of the Great Wall at Badaling. It is not blocked off, but there are warning signs posted that you continue at your own peril. The stairs are crumbling and the sides of the wall are broken, exposing the earthen filling that the early builders used. The cable car dropped us off near the middle of the picture where the mountain wall comes to a point, and then we walked down to the wide parking lot below and then up the other side to when I am now.