PLANETOBSERVER / SCIENCE PHOTO LIBRARY PLANETOBSERVER / SCIENCE PHOTO LIBRARY
Santorini volcano, Greece, satellite image. North is at top. The sea-filled caldera (lower right) shows where a massive volcanic eruption some 3500 years ago destroyed most of the island of Santorini (also called Thera). The island is part of the Cyclades archipelago, south-east of the Greek mainland. The caldera is about 12 kilometres long. Image data obtained on 8 August 1999.
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