I saw that some walls are built on very steep mountain ridges. I just wonder how the stones or bricks were carried there, only by using of manpower? I understand that it is impossible for horses to climb the steep mountains.
Reply
I saw that some walls are built on very steep mountain ridges. I just wonder how the stones or bricks were carried there, only by using of manpower? I understand that it is impossible for horses to climb the steep mountains.