Diver over Pavlopetri Site (IMAGE) National Oceanography Centre, UK Caption Nic Flemming -- The curvature of the sea surface and the nearby walls is of course caused by the "fish-eye" lens. There is an obvious wall across the foreground, slightly curved, and two huge wall foundations stretching away parallel towards the diver. There are other walls branching off into the gloom to left and right. Although there are some square or flattened paving stones in the town, almost all the walls are made out of uncut stones like dry-stone sheep walls on Exmoor. They were probably packed with clay to make them stronger, as we know that some of the houses were at least two stories high later in the Bronze Age, from the paintings at Santorini. The diver is Kirsten Flemming, who was the architect-diver for the project. Credit Pavlopetri Expedition Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.