Part of the same brief glimpse of the show featured a hand tool found in a trench, which was reckoned to be some kind of A-Frame mounted maul to shape the stones.
I've never been comfortable with the "swinging a rock at a larger rock to dress it" method. Has this been tested by anyone to any degree of success? It just looks a bit random and cumbersome to me. Although it's entirely possible it IS the best method!
Any ideas?
G x