As we go from Wilton to Stonehenge, between Grovely wood and Woodford runs a ditch across the plain, with a high rampart southward: the ditch is broad, and goes east and west. I take it to be one of the boundaries of the _Belgæ_, which I call the third: the reason will hereafter appear. On the east side of the Avon, by Great Dornford, is a very large camp covering the whole top of a hill, of no determinate figure, as humouring the height it stands on: it is made intirely without any ditch, the earth being heaped up very steep in the nature of a parapet, when dug away level at the bottom. I doubt not but this was a camp of the Britons, and perhaps an _oppidum_, where they retired at night from the pasturage upon the river, with their cattle: within it are many little banks, carried strait and meeting one another at right angles, square, oblong parallels and some oblique, as the meres and divisions between ploughed lands; yet it seems never to have been ploughed: and there is likewise a small squarish work intrenched, no bigger than a large tent: these to me seem the distinctions and divisions for the several quarters and lodgements of the people within; for I have, upon the downs in Dorsetshire, often remarked the like, of too small a compass to be ploughed fields. This camp has an aspect very old; the prominent part of the rampart in many places quite consumed by time, though the steep remains perfect; one being the natural earth, the other factitious: it certainly has so much of the manner of Vespasian’s camp, as induces one to think it an imitation. I know not whether we ought to derive the name of it from the British _Og_, signifying the hurdles and pens they fence their cattle in with, which perhaps stood upon those meres, or little banks, to distinguish every man’s property. Vespasian’s camp is within sight of it, a little higher up the river, and on the other side: it is a famous camp, properly and by universal consent attributed to him, called the Walls; well chose, being a high piece of ground at a flexure of the river, which closes in an end and a side of it: the other side has a broad and very deep valley along it, and at the other end is the entrance: the whole hangs over the town of Amsbury: the manner of this camp too consists mostly in a rampire, but much more operose than that last mentioned; the form oblong: the road to the town goes quite through it: it is high in the middle, and has a barrow inclosed, but partly level; this I suppose originally Celtic, on account of its vicinity to Stonehenge, therefore elder than the camp. The east side of Vespasian’s camp is sufficiently guarded by the precipice of the river. Further northwards, in the road from Ambsbury to Marlborough, is the remain of another round camp, extremely old, and almost obliterated: this is between Collinburn and Burbich, upon a rising ground, seemingly British: and on the west side of the river