Well west of the Eponymous Heroes monument. The shaft was of irregular width (ca. 0.81m where the full circle was first preserved), sunk in soft bedrock clay much of which had collapsed around the top ... Ca. 600-550 B.C ... About 60% coarse; 40% fine ware; 10% figured; few late Geometric; few Protoattic; some Corinthian imports.
