Its gatehouse occupied the south-west angle of this ward, and was built on the edge of the cliff. The remains of it are very scanty. The curtain between it and Mortham Tower seems to have been a mere parapet, cresting the cliff. The curved curtain connecting the gatehouse with the keep, and covering the two landward faces of the ward, is tolerably perfect. It is strengthened by an exterior buttress and a small tower. This latter, which is placed near the angle of the curtain, towards the keep, contains a basement and upper chamber, both vaulted, though of the latter, which was at the rampart level, only some fragments remain. This tower is rectangular, but the angles are chamfered off. It has no internal projection, and outside, against each of its three faces, is applied a Decorated buttress of 2 feet 6 inches breadth, by 3 feet 6 inches projection at the base. Each is of three stages, and dies into the wall near its summit. Between this tower and the keep is a large buttress, apparently hollow, possibly for the pipe of a garderobe. This also is a Decorated addition. Near it the curtain has a flat Norman pilaster strip, but of three stages. It is 4 feet broad, and diminishes from 18 inches to 6 inches projection. It also dies into the wall near the top. It is not unlikely, from the aspect of the inner ward, that this was a fortress of the tenth century, composed of a cliff on two sides, a ditch on the other two, and a centre more or less nearly circular, and artificially scarped; in fact, a motte, upon which stood the original stronghold. The outer ditches may be of the same date, but from their figure and plan they are more likely to have been a later, probably a Norman, addition. Their contents are thrown inward so as to form a ramp behind the wall. It is evident that the whole area of the castle, as it now stands, was inclosed by the Normans, and the walls throughout and nearly all the towers are latish in that style. Here and there, spread over the whole _enceinte_, are remains of Norman work. The pilaster strips on the inner curtain, the arches in the several ditches, the square tower and gate on the north curtain, Brackenbury’s Tower, and much of the wall towards the town are original. In the inner ward the base of Mortham Tower, and the half-round mural tower near the north gate, are probably Early English. The keep, the fragments of the hall, the south-east tower of the inner ward, and most of the remains of other buildings are evidently Decorated. The original walls were mostly of sound rubble, with ashlar dressings. In the Decorated work ashlar was more freely used.