Backfill of demolition of Great Monument beneath Middle Stoa.
[Soft pit below Layer II of south aisle (=fill of early "Great Drain")] ... Early 4th c. B.C.
Well at 75/ΚΖ (75/ΚΗ, 76/ΚΣΤ-ΚΖ). A dumped filling; an accumulation for the most part of the late 6th and early 5th centuries.
Tiled well; of the lining only a single set of tiles, of unusual make, remained ... Ca. 450-425 B.C.
Exploration in the peristyle of the Heliaea (1960); evidence for rebuilding in the third quarter of the 4th c. B.C. with some disturbance as late as 1st-2nd c. A.D. Date of reconstruction ca. 325 B.C ... Ca. 350- 325 B.C.