This shaft in the NE corner of House A, Room III, depth of one tile, is perhaps connected with drain A. Coins:
13 May 1940 #1-#13
14 May 1940 #2-#101 ... Early 3rd. c. B.C.
Cistern-system west of the Stoa of Zeus. Two chambers connected by a tunnel, each with two fills. Lower fill in south chamber contemporary with upper fill in north chamber, at the end of the 4th c. B.C ... Ca. 375-160 B.C.