The Pitcairn Islands, officially named the Pitcairn, Henderson, Ducie and Oeno Islands, are a group of four volcanic islands in the southern Pacific Ocean that form a British Overseas Territory. The four islands – Pitcairn, Henderson, Ducie, and Oeno – are spread over several hundred miles of ocean and have a total land area of about 47 square kilometres . Only Pitcairn, the second largest and measuring about 3.6 kilometres from east to west, is inhabited. Wikipedia