Full north from hence, upon the Barbury hills, the next ridge overlooking the north part of Wiltshire, is another camp, called Barbury, in the parish of Ogburn St. George. The noble lords late mentioned assisted in measuring it: it is double ditched quite round, the inner very deep, and rampart high, of a circular form; an entrance upon the east, and another on the west diameter, which is 2000 Roman foot long: at the west the inmost rampire retires inwards a little, to make a port with jambs: eastward the outer ditch turns round with a semi-circular sweep, leaving two passages through it obliquely to the main entrance, like our modern half-moons: both these methods I have often seen practised.[127] This mighty camp stands on one of the western eminences of this ridge, running east and west; very steep to the north and west, separating the high ground or downs from the fertile country below, which belonged to the _Dobuni_, and lies under the eye like a map, as far as the Welsh hills beyond the Severn; whose lovely prospect would naturally animate the Britons in its defence, as the Romans in its conquest: it is indeed a fine scene of woods, towns, pastures, rivers and valleys. A little beyond, upon the same ridge, is Badbury camp; and the whole is well planted with stout camps and frequent, the eye-sore and terror of the plain: hence you see Martinsal camp and many more. [Sidenote: Ro. _road to_ +Bath. via Badonica.+] [Sidenote: +Oldbury.+ Ro. _camp_.] [Sidenote: TAB. XLII.]