The East Chamber of a double cistern lying between the northeast corner of the Theseion and the Annex to the Stoa of Zeus Eleftherios. ... Both chambers went out of use as water containers simultaneously ... Ca. 200 B.C.
May be of Hellenistic origin when cistern system went out of use.
For a general note on the cistern see Nb. ΟΕ III, pp. 246 ff.
Objects from B 586 various depths (no subdivision): S 2324-S 2330,
P 34894, ... Late 2nd-early 6th c. A.D.
