Santorini is the most extraordinary island in the Aegean. The volcanic cliffs of Santorini are red, brown or greenish, surmounted by a string of white villages. Jetting out from the deep blue sea its volcanic sheer cliffs topped with gleaming white village homes and churches, resemble snowcapped mountains. The thunderous fury of nature left its mark on the island, the home of Greece's last active volcano which still smolders today. Layer upon layer of red volcanic rock interspersed with white buildings and specks of greenery form a visual demonstration found nowhere else. The entire center of the circular island sank into the sea during the tremendous volcanic explosion of 3.500 years ago. The eruption caused tidal waves which virtually wiped out the advanced Minoan civilization of Crete 70 miles to the south. Some scholars believe that the island is part of the legendary lost continent of Atlantis which supposedly slipped underwater during the disaster. What remains today of Santorini is a large cresent-shaped island enclosing a vast bay, the largest caldera on earth (7X14 miles).