That's a mad place to have a dolmen. I've always fancied visiting the one they moved from Brittany to Paris to stick over some gent's grave. It's in a cemetery somewhere, sat there amongst all the head stones and memorials.
We should have a little competition to see who has the most bizarre example of a re-used or moved site. Granted, I think that FW has already won, but it's worth a shot.
Kammer x