The Exeter Road begins to rise immediately on leaving Dorchester. Leaving the town by a fine avenue of ancient elms stretching for half a mile, the highway runs, with all the directness characteristic of a Roman road, on a gradual incline up the bare and open expanse of Bradford Down, unsheltered as yet by the stripling trees newly planted as a continuation of the dense avenue just left behind. The first four miles of road from the town are identical with the Roman Via Iceniana, the Icen Way or Icknield Street; and on the left rises, at the distance of a mile away, the sombre Roman earthwork of Maiden{280} Castle crowni............