Poros Island

Poros is a small Greek island-pair in the southern part of the Saronic Gulf, at a distance about 58 km south from Piraeus and separated from the Peloponnese by a 200-metre wide sea channel.
Poros consists of two islands: Sphairia or Sferia, the southern part, which is of volcanic origin, where today's city is located, and Kalaureia, also Kalavria or Calauria (meaning 'gentle breeze'), the northern and largest part. A bridge connects the two islands over a narrow isthmus.
Poros is an island with rich vegetation. Much of the northern and far eastern/western sides of the island are bushy, whereas large areas of old pine forest are found in the south and center of the island.