This wall (continued by block 7162 to the north, inside of Room 1) seems to represent the western limit of the rooms on the eastern side of the 'piazza' in the original ashlar phase (in phase with walls 7143, 7146, 7149, 7078, 7108, 7057, 7073/7094, 7072, 7012, 7055, 7036, 7097, 7098 and bases 7145 and 7147). With the construction of the concrete phase(s), the wall seems to have been obliterated and partially covered by the basalt pavement of the 'piazza'. See also SU 7162.