_Discovered by Dr. Stukeley_, 1723.
This great enclosure lies to the north of Stonehenge, and veers 6° from
due east and west. Like the avenue it is formed by banks thrown up from
an outer ditch. It is 9000 feet in length, with a width of 350 feet at
its centre, but towards its extremities it narrows. To the west, the
southern boundary is irregular. The northern ditch, on the contrary,
makes a fairly straight line. Its eastern end is headed by a long mound
now difficult to trace. Near its western extremity, and within the
enclosure, are two small tumuli irregularly placed. The greater part of
this earthwork being on the uncultivated Down is fairly well defined,
especially to the west; to the east it has been obliterated by the
plough.