Roman Retaining Wall; Channel Drain; Tank ... ΝΝ-6 1173, 1174 ΝΝ 629 SS 8851 ΝΝ 630 SS 8852 ΝΝ 631 SS 8853 ΝΝ 632 SS 8854 ΝΝ 633 SS 8856 ΝΝ 634 SS 8857 ΝΝ 635 L 3757 ΝΝ:1939.0508:35 N 36943 ΝΝ:1939.0508:36 N 36944 ΝΝ:1939.0508:37 N 36945 ΝΝ:1939.0508:38 ... 8 May 1939