North of, and connected with the hall is a rectangular projection (D), 36 feet deep by 60 feet in front, the lower floors of which are laid on the scarp of the ditch, considerably below the level of the ward. These were doubtless offices, but as nothing but the lower walls remain little can be discovered of their detail. There remains, however, in the curtain the jamb of a large doorway, whence descends a flight of steps about 20 feet, probably to a postern, of which, however, there are no traces, on the edge of the ditch. These steps led into one of two apartments, at one end of each of which is what was probably a fireplace, though they more resemble the vent of a garderobe shaft, which, however, they cannot well be, since the chambers were certainly not cesspools. The walls of this projection are substantial, and certainly carried an upper storey, probably occupied by withdrawing-rooms and private apartments attached to the hall. No well has been discovered, nor oven, nor any signs of a garrison chapel, all which were probably placed in this ward. The great gateway opened in the north-west face of the curtain, and from the fragment of a jamb that remains with a bold rebate seems to have been about 8 feet high and broad in proportion. A projection inwards from the curtain shows that there was some kind of small gatehouse. This gateway opened into a spur work formed by two curtains, 32 feet apart, projecting from the main curtain down the scarp of the ditch so as to form a parallelogram 40 feet wide by 68 feet long. The curtains were 4 feet thick and about 24 feet high. The western is destroyed, but the eastern is tolerably perfect, and at its junction with the main curtain is a shouldered postern door, 2 feet 9 inches broad, which opened on the scarp of the ditch. At the further and lower end of the spur-work the walls turn inward (E in the plan), and again proceed parallel for 14 feet at 27 feet apart, and there contain the gates and pit of the drawbridge, beyond which a second narrowing reduces the distance to 21 feet, at which they proceed for 14 feet more, when the walls abut upon the counterscarp of the ditch, at that point revetted with ashlar. Thus the whole length of the spur-work, from the main curtain to the counterscarp, is 96 feet, and its breadths, over all, 40 feet, 25 feet, and 21 feet.