The discovery of Pavlopetri proved which of Flemming's theories?

Originally, the ruins were dated to the Mycenaean period, 1600-1100 BC but later studies showed an older occupation date starting no later than 2800 BC, so it also includes early Bronze Age middle Minoan and transitional material. It is now believed that the town was submerged around 1000 BC by the first of three earthquakes that the area suffered. The area never re-emerged, so it was neither built-over nor disrupted by agriculture. Although eroded over the centuries, the town layout is as it was thousands of years ago. The site is under threat of damage by boats dragging anchors, as well as by tourists and souvenir hunters