The Pitcairn Islands (pronounced /ˈpɪtkɛərn/ ; Pitkern : Pitkern Ailen ), officially named the Pitcairn, Henderson, Ducie and Oeno Islands , form a group of four volcanic islands in the southern Pacific Ocean. The islands are a British overseas territory (formerly a British colony), the last remaining in the Pacific. The four islands – named Pitcairn, Henderson,Ducie, and Oeno – are spread over several hundred miles of ocean and have a total area of about 18 square miles (47 km2). Only Pitcairn, the second largest and measuring about 2 miles (3.2 km) across, is inhabited. The islands are best known as home of the descendants of the Bounty mutineers and the Tahitians (or Polynesians) who accompanied them, an event retold in numerous books and films. This history is still apparent in the surnames of many of the islanders. With only about 50 inhabitants (from four families as of 2010: Christian, Warren, Young and Brown), Pitcairn is the least populous and most remote jurisdiction in the world (although it is not a sovereign nation). The United Nations Committee on Decolonisation includes the Pitcairn Islands on the United Nations list of Non-Self-Governing Territories.