The section in front of you displays a highly refined technique of construction, with careful working of the rectangular limestone blocks. This wall is subdivided by vertical offsets placed at regular intervals. These continued the lines of the corners of the timber-framed superstructure which probably once stood on the wall, so providing (as it were) a visual foundation. The slightly inward-sloping substructure of the wall is 6 metres high and 4,5-5 metres thick. The superstructure, no longer preserved, reached up a further 3-4 metres. Besides timber beams, this was initially built of sundered mudbrick, but in time the whole superstructure was replaced by a narrow stone wall. The overlapping sections of wall constitute the entrance to the citadel. Already in the Hellenistic period, the eastern wall of this gateway was deeply cut into the retaining and foundation wall of the temple precinct.