There are two entrances, the north, or King’s Gate, and the south, the Duke of Suffolk’s, or Palace Gate. The gateways are vaulted passages, with a flat segmental arch, opening externally between two square flanking towers. There is a groove for a portcullis, and the vaults have an early English import. Each of these gates is defended by an additional work. A sort of hornwork is thrown out in advance, enclosed within a wall with towers, and with a second gate placed obliquely to the first, to allow the approach to be commanded. The north, called the King’s Gate, is tolerably perfect. The southern outwork is nearly destroyed. It had two gates, one to the south, connected with which was the tower containing a well, and one to the east, called King Arthur’s Gate, close to which was the Armourer’s Tower, and near this was Earl Godwin’s Postern. The masonry of this inner ward was probably of the date of the keep. It was included within a broad and deep ditch, now incomplete, on the southern front. The _Middle Ward_ includes the southern half of what was probably the English earthwork. Its southern two-thirds is rounded, but at its base are, or were, walls and towers connecting it right and left with the curtain of the outer ward, which it thus divided into two parts. In advance of this work were three towers: two, to the east and west, Clinton and Mortimer, were square. Both seem to have been of Norman date. The central tower to the south was circular, and was called Valence. It was, no doubt, later, probably of the reign of Henry III. The foundations of Clinton Tower were laid open and removed in 1794. A fragment of Mortimer’s Tower remains. Valence Tower was destroyed in the last century. The gatehouse of the ward is called Colton Gate. It is Norman, but an octagonal story has been added to the square base. The curtain connecting these towers is gone, and the lofty south bank has been scarped, and its outline changed. In this ward is a well 380 feet deep, once covered by a tower.