The
headland that is Cape Zonchio, is just north of the island of
Sphacteria (Sfaktiria in modern Greek), to the northwest of Navarino Bay (Ormos Navarinou in modern Greek). On the eastern side of Coryphasium is the Lagoon of Osman Aga (Limín Dhivári). To the south is Sikia Channel, 220 feet wide and only 18 inches deep, separating Cape Zonchio from Sphacteria. To the west is the Ionian Sea, and to the north it is connected to the mainland by a sand spit on the eastern side of Voidokoilia Bay. ==History==