Water basin of the Water Clock in front of the stepped retaining wall. Martyra of Hellenistic fill (in background) across its east end. Lines on face of martyra indicate pillage trench of Drain B (bottom ... east 2079 Horizontal (normal) ... 24 Apr 1953 ... Water basin of the Water Clock in front of the stepped retaining wall. Martyra of Hellenistic fill (in background) across its east end.