Wikipedia
Keratea
Keratea is a town in East Attica, Greece. Since the 2011 local government reform it is part of the municipality Lavreotiki, of which it is a municipal unit.Legend has it that when the barbarians came to attack Greece at the land of Keratea,Zeus and Hedes drew the coast together so they can talk and allowed only a strip of water in between. The Greeks were so very few so to give them a fighting chance Zeus and Hades summoned Poseidonis and asked him to send waves bigger than the barbarians ships.People from that time say that even the Hades himself fought on the side of the Greeks. So the sea by the land of Keratea is known as Kakia Thelassa (the Bad Sea) ever since.