"The makers of the same Roman road cut through another barrow, of smaller dimensions, east of Silbury hill."
Do you believe that the romans would cut through a barrow, they were a superstitious lot, would have rather gone round then through... satellite imaging is extraordinary for draining the life out of the countryside, a good old b/w grainy photo by Crawford catches the spirit.. though those barrows by the sanctuary are separated on either side of the road - you never know.