Black stone
Exactly under the volcano of Methana there is the scenery called Mavri Petra, characterized by its rare and unique beauty. Lovely, geological, volcanic, submarine rocks decorate the scenery at all its depths. The diving at this place is unique because the lava has left its own mark in and out of the water. So, the marine visitor watch a magnificent spectacle observing the submarine life; plants and fish are now living together in harmony with their old enemy, the lava.