Aerial view of a hillside near Aidonia ca. 1600 - 1400 BC. showing a cemetery containing chamber tombs dated to the Mycenaean Bronze Age. They were first investigated by archaeologists in 1978. Two intact chamber tombs of the Mycenaean period were unearthed here, but the rest had all been emptied out by looters, perhaps in the winter of 1976 - 1977, a short time before archaeologists started digging here. Chamber tombs are a typical feature of the Mycenaean Bronze Age (ca. 1700 - 1600 to 1100 BC) in the Argolid and surrounding territories. They are cut into the rock and consist of a central grave (the chamber), with a narrow opening that is normally sealed off; the tomb is accessed via a passageway or dromos.