Is there a large stone lying recumbent, in the wall, at the centre of this picture?
http://img.photobucket.com/albums/v480/Gyrtrash/SummerbridgeStones1.jpg
That's new wall - incidentally - it looks like a big stone has been incorporated into it. This fashion was native to SW Scotland - usually in Britain the stones were broken up on the basis that they settle easier with time.
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