North foundation of the Middle Stoa at the west end, looking towards the northwest corner. Lower right, Great Drain, East Branch, at point where it passes under the north foundation ... AMS northwest Horizontal (normal) ... August 1947
Hydraulic Unknown Limestone (Polygonal Masonry) Good, long stretches preserved ... Ca. 500 B.C.
Commercial Unknown Conglomerate, Limestone Fair, foundations and east stylobate with column drums ... Mid 2nd B.C.