Monument to SOuth of Later Altar of Zeus. General Note. Monument Bases Between South Wing of Stoa and Great Drain. Early Poros Geison. Monument Bases to East of Great Drain. Large Base at 21/ΛΣΤ, Plan ... Η'-12 2253, 2254 A 759 ... 1933 ... Clearing Northwest Corner ... Clearing Floor at 45/ΜΒ ... Clearing Floor at 46/ΜΗ (marble Door Joint)