Image of The Sanctuary (Timber Circle) by Chance

The size of the Sanctuary can be judged here by the circles cut in the grass.
The access gate from the A4 layby and the Ridgeway, with the round barrows of Overton Hill, in the background.
This shot shows the two odd stones leading off the Avenue stones to the left. (See the ground plan for a clearer view of this.) This feature may have been the exit if you were to process around, or could have been the entrance used by the high priest, once everybody else had assembled. There is also a single odd stone shown opposite this. The plan seems to show the stones turned 90 degrees to the circle, so forming another entrance/exit.

Image credit: Chance – June 23 2008