If you go to the Island of Lemnos in the Aegean Sea you can see the remains of Poliochni, one of the most important Aegean settlements during the 3rd millennium before Christ. The remains clearly show the development of Poliochni through the centuries. The first settlement was most probably destroyed by an earthquake. But people returned and continued to live there for a thousand years. Then Poliochni disappeared to be discovered by archaeologists in 1930.