There are no regular bosses, but at each point of intersection the ribs abut upon an open circle, the centre of which is occupied by a lion’s face, dropped in from above. There are, therefore, three main and eight smaller circles, besides six half-circles at the junction of the ridge and wall-ribs. The ribs and circles, though of one pattern, are of two sizes. All have been clumsily cobbled with Roman cement. The porter’s lodge, on the east side of the entrance, is a vaulted chamber, 10 feet square, with a window of two lights, no doubt replacing a loop towards the south or front. A door, now closed, on its north side, seems to have led into a staircase to the upper floors. About 4 feet of this lodge is excavated in the thickness of the wall of Wakefield Tower. The entrance-way, on passing the gatehouse, lies between a retaining wall on the left, or west, and the main guard, which supersedes Cold Harbour wall, on the right. A modern staircase, no doubt representing an old one, ascends in the substance of the west wall, and opens on the parade before the constable’s house, and here also is the entrance to the first floor of the gatehouse. This is by a Decorated, or early Perpendicular door, leading into a chamber 28 feet by 18 feet, having a large double-light window in the west wall by the door, and in the east wall a loop towards Cold Harbour, and a passage which, through a Caernarvon-headed door, leads into a small vaulted and ribbed garderobe on the left, and onward into what is no doubt the well-stair from below, now closed; and which seems to have ascended to the roof. This, which was the portcullis chamber, has also windows at either end over the portals, and across its south end a low four-centred arch, in which are fastened two sheaves carrying the portcullis, which rises through a chase in the floor, and is lifted by a rude long wooden windlass worked by three sets of capstan bars. The northern portcullis was lighter, and perhaps never actually inserted. The only trace of its working arrangements is a part of a flat-topped recess, from which it might have been suspended. An upper floor, reached by a well-stair cut in the wall between this and the Wakefield Tower, contains a room 25 feet long by 18 feet broad, at the south end of which is walled off a passage 26 feet long by 4 feet broad, at the west end of which a door, now walled up, opened upon the ramparts, showing that this curious passage made a part of the rampart walk, which accounts for a door and loop which opens upon it from the gatehouse upper floor. The well-stair is continued to the leads of the tower, 10 feet above the curtain. The doors, window, and portcullis arch in the first floor, all have a deep bold quarter-circle hollow, replacing the angle, instead of the usual chamfer.