One of two medieval robber trenches (with MCC3006) which had completely robbed-out two parallel east-west orientated Roman walls from the Roman Circus MCC2805 (although not fully realised at the time of excavation).

This trench robbed-out the larger, northern wall of the structure, which was approximately 0.8m wide and was vertical sided, with a flat base (surviving at a depth of 0.19m). The wall had been supported by two large buttresses, projecting approximately 0.95m out to the north of the wall. The foundation cuts for the buttresses were located 6m apart from one another, and the only complete buttress within the excavation measured 3.8m wide.

Both walls had been completely robbed-out by the medieval robber trenches (although there was no suggestion that the original foundation trenches had been widened during the robbing). The remains of some Roman structural material (greensand stone, flint, septaria and Roman coursing tile) was found within the backfill of the robber trenches.<1>