In Eleochori it has been realized a great archaeological excavation in Kalamaki position, located in western Achaia and located 30 km southwest of Patras at a low plateau inclined SSW-NNE at an altitude of 120 to 140m. Excavations by the 6th EPKA revealed an extensive cemetery of the Early Bronze Age with chamber tombs that were altered during the Late Greek season for constructing Mycenaean chamber tombs. The graves of these two seasons have been carved in clay sandstones and clay marl layer and extend in the same space with a dense arrangement. The architectural form of the tombs of the Early Bronze Age is vaulted with vertical trench-access road. The streets are four-sided, approximately trapezoidal square or slightly elongated, while the walls either vertically or converge more or less strongly to the floor which is usually higher than the level of the chamber, rectangular or circular shape. The pottery is handmade (jugs, jars, composite vases, jars, compasses, cups etc.). These graves as premier have suffered interventions by the construction of the later chamber tombs. Their offerings are rich and are representative samples of pottery and metalwork miniatures of the time.