The battlements remain perfect, so far, at least, as are the walls they crown. The embrasures are of moderate size, and the merlons broad, and the running moulding is carried round the whole. At each angle is a square turret, rising about 10 feet above the curtains. These turrets rest upon a light bracket outside, and each of the outer faces is flanked by two light, slender buttresses, in tabernacle work, resting below upon brackets, and, no doubt, once ending above in delicate finials. In each face is a single embrasure. Of course, all these are additions. The question of the entrance to this keep is obscure. There remain three doors, any one of which would serve. That on the ground floor to the south; a small round-headed door at the first floor level to the north; and a third door, in the same wall, a little lower down, leading into the well-stair. There are, however, indications that none of these was the real entrance. Against the south wall are traces of attached masonry, probably of a forebuilding, containing and covering the entrance, which in that case would have been in the south wall near the east end, a part now destroyed. The staircase seems to have commenced against the south-west end of this wall, and to have passed over the present door, which probably, as at Rochester, opened into a cell below the staircase of the forebuilding. This conclusion is strengthened by the presence of seven holes in the keep-wall at the rampart level, evidently to carry a brattice commanding the staircase below. Also, high up in the same wall, there projects a mass of ashlar, which may very well have been part of a machicolation, overhanging the door at the stair-head: arrangements similar to these are not uncommon in keeps of this pattern. Of the other doors the small round-headed one may very well have opened upon the ramparts as at Clitheroe; and that which is let into the well-stair, now closed and converted into a loop, looks rather of a Decorated character, and may be an insertion, and may have led into some annexed building now destroyed. At the period when this tower was built there was no longer that extreme caution in allowing no more than one entrance to the keep.