The city of Pavlopetri the underwater city, underwater of the coast of southern Laconia in Peloponnese, Greece, is about 5,000 years old. It is the oldest submerged archeological town site and its uniqueness lies in the fact that the town has an almost complete town plan, including streets, buildings, and tombs. It believed that the town was submerged around 1000 BC and Pavlopetri the underwater city discovered in 1967 by Nicholas Flemming and mapped in 1968 by a team of archaeologists from Cambridge.
Studies of Pavlopetri the underwater city ruins showed an occupation date starting no later than 2800 BC, which also includes early Bronze Age middle Minoan and transitional material. Despite the erosion over the centuries, the town layout is as it was thousands of years ago.
The fieldwork of 2009 was largely to map the site. It is the first submerged town digitally surveyed in three dimensions. Sonar mapping techniques developed by military and oil prospecting organizations have aided recent work.
Four more fieldwork sessions for excavation works are planned, also in collaboration with the Greek government as a joint project. Alongside the archaeologists (from the University of Nottingham) is a team from the Australian Centre for Field Robotics, who have developed several unique robots to survey the site in various ways. One of the results of the survey was to establish that the town was the centre of a thriving textile industry and a major trading port.