Well (stone-curbed shaft) near middle of Tholos which served the prior building.
Period of Use dated to ca. 500-480(?) B.C., Upper fill dated to ca. 480-470 B.C. or soon after in Agora XXX (a gradual ... Ca. 500-480 B.C ... Agora IV, p. 239 ... Hesperia Suppl. 4, pp. 30-33 (the second well of Building F).