A more interesting, though in part less ancient, series of sculptures decorated the main door of the citadel. This was placed at the southern bend of the wall, and, as it appears in its final form, resembled closely in general plan the gateways of the palace at Eyuk and of the citadel of Boghaz-Keui, which we have previously described.[645] The approach to this entrance is protected, as in those other cases, with wing-towers on either hand.[646] The width at this point of the entrance is about twelve yards, and the depth of these extra-mural towers before reaching the first doorway is six yards. The first doorway is met with almost in alignment with the contour of the wall. Its broad pilasters project eleven feet, leaving the space between them rather more; this was filled, as the excavators found reason to believe, by a double door. The space beyond—lying, that is to say, between the two doorways—forms a separate chamber the same width as the entrance and with a depth of sixteen feet, bounded on the inner or northern end by the pilasters which supported the second doorway. These are almost in alignment with the main inner walls of the entrance-towers, which thus have a total depth of fifty-five feet; their breadth is about ten yards. The main wall of the enclosure, to which they return on either side, has a thickness estimated at about fifteen feet. The whole of the face of this entrance, both along the façade of the towers and around the bases of the pilasters, was decorated with sculptured slabs. The carving in all cases is in relief; the subjects represented are various, including deities, mythological emblems, and scenes of the chase, the treatment of which in all cases corresponds to the established Hittite motives and presents in other details traces of Hittite handiwork. The date of this gateway is at least as early as, indeed probably earlier than, the stela which Esarhaddon set up in the space between the two doors in B.C. 681. Indeed, the origin of the gateway was traced by the excavators to the second great building period, though its final structure and some of its decorations belong to the later phase. We may assume that its latest sculptures were the work of the eighth century B.C. [Illustration: SINJERLI: SKETCH PLAN OF THE GATEWAY, SHOWING BY NUMERALS THE POSITION OF THE SCULPTURES DESCRIBED IN THE TEXT.] The sculptures in this case are so numerous that we find it convenient to attach numbers to them for reference. We begin with the outer approach to the gateway from the southern end, and describe the sculptures on each face of the wall east and west, before proceeding to the next return.[647] At the approach of the doorway and facing south the series of sculptures begins on the left hand (to the west) with