And just to get back to shakeholes and stones George;

Bradley uses a better term for 'sacred' which is 'significant' and which he used for his later book; the shakehole is a significant marking of the landscape.... Given the fact that 'deposition' can take the place of 'ritual offering', and that ancestral and landscape memory become part of the backcloth of interpretation for the neolithic and bronze ages , its a flipping minefield and thats not counting in the stars, moon and sun.
Marking of the landscape; for me, the Carn Meini outcrop has very significant factors in the surrounding land, the natural carns look very much like longbarrows -the landscape has become ancestral. Hamish said somewhere that the capstones of the cromlechs on Anglesey echoed the shape of the mountain tops which has been said by others.......