Retaining Wall. West Wall of Stoa. C. D. A. B. Layer I. Reddish. Yellowish. Terracotta Pit. Layer II. Layer III. Stoa's West Wall. Fill. Trial Pit behind Retaining Wall of Stoa. Kolonos Agoraios. West ... Α-6 1156, 1157 H 7:1 ... 23 Feb 1935 ... Α-6-93 (pp. 1156-1157) ... Α-6-93 ... Α.1156