It has been stated that the keep stands upon the south-eastern slope of the mound, consequently there is to the west, and in front of its entrance, nearly the whole table summit. This was enclosed by a circular wall, like a shell-keep, about 25 feet high, which, springing from the south-eastern angle of the keep, seems to have been carried round the mound, commencing at about half its height, until it reached the north-east angle of the keep, at which junction there seems to have been a gateway. Of this circular wall about one-half, either actual or in foundations, remains. The fragment of wall, about 5 feet thick and 20 feet high, is evidently of the date of the keep, the same thin red tiles being used in its chalk masonry. Also in this wall is an original garderobe, apparently of three stages: one at the ward level, one half-way up, and one on the battlements; the three seem to have united in a common shaft, the vent of which is seen outside the base of the wall. The space thus enclosed by the keep and the circular curtain was the inner ward. How the main door of the keep was reached does not appear. There was not the usual fore-building, as at Norwich or Rochester; the circumscribing wall and the lofty position of the keep rendered this unnecessary. A row of small holes at the door level may have belonged to a sort of timber landing, to be reached by a flight of steps of the same material. There is said to have been a well in this ward, about 6 feet from the west wall of the keep, south of the door.