Agora Image: 1997.12.0021 (XXXVIII-56): Face of scarp. Looking from a point on the back wall of the Stoa at shop XI. At the extreme right, part of thick concrete wall which marks the northern end of the floor with the column bases. The Roman mosaic floor visible in this picture is some 0.50m higher than the other floor. The vaulted Roman drain, which cuts through the thick hard-packed Early Roman layers, falls directly opposite the wall between the Shops X and XI of the Stoa.