Deception Island (62°57′S, 60°38′W) is one of the most incredible islands on the planet. It is an active volcano in the South Shetland Islands, off the Antarctic Peninsula. Its unique landscape comprises barren volcanic slopes, steaming beaches and ash-layered glaciers. It has a distinctive horse-shoe shape with a large flooded caldera. This opens to the sea through a narrow channel at Neptunes Bellows, forming a natural sheltered harbour. It is one of the only places in the world where vessels can sail directly into the centre of a restless volcano.