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.
Actually in 38/ΙΕ, nbp. 766).
Pit contained at top much pottery and a few coins; sand for about 0.70m below, produced little pottery but many coins including some 2nd century Imperial and one of Salonica ... 3rd c. A.D.