Roman Retaining Wall; Channel Drain; Tank ... ΝΝ-6 1162, 1163 ΝΝ:1939.0505:56 N 36875 ΝΝ:1939.0505:57 N 36876 ΝΝ:1939.0505:58 N 36877 ΝΝ:1939.0505:59 ΝΝ:1939.0505:60 N 36878 ΝΝ:1939.0505:61 N 36879 ΝΝ:1939.0505:62 N 36880 ΝΝ:1939.0505:63 N 36881 ΝΝ:1939.0505:64 ... 5 May 1939