The Pitcairn Islands (; Pitkern: ), officially Pitcairn, are a group of four volcanic islands in the southern Pacific Ocean that form the last British Overseas Territory in the Pacific. The four islandsPitcairn, Henderson, Ducie, and Oenoare spread over several hundred miles of ocean and have a total land area of about . Only Pitcairn, the second largest island measuring about from east to west, is inhabited.