ocifant wrote:
Thanks for pointing that out Rhiannon.
I mentioned earlier why were the circles also described as ovals. Stukeley's drawing shows the snakes head rather oval in shape doesn't it!! I'm pretty sure it's the Sanctuary. The avenue there is certainly pointing south of Silbury. But is it the Sanctuary or not? Looking again at a different scale OS map, I can see a 'Site of Stone Circle' marked just a short distance south of the Sanctuary (which is marked separately) NGR SU 118 679. But on MAGIC, this is described as a Bowl Barrow.
The mystery deepens? Which is the 'Head of the Serpent'? Which is the double circle?