The Pitcairn Islands (/ˈpɪtkɛərn/ PIT-kairn; Pitkern: Pitkern Ailen), officially Pitcairn, Henderson, Ducie and Oeno Islands, are a group of four volcanic islands in the southern Pacific Ocean that form the sole British Overseas Territory in the Pacific Ocean. The four islands—Pitcairn, Henderson, Ducie and Oeno—are scattered across several hundred kilometers (miles) of ocean and have a combined land area of about 47 square kilometers (18 square miles). Henderson Island accounts for 86% of the land area, but only Pitcairn Island is inhabited. The inhabited islands nearest to the Pitcairn Islands are Mangareva (of French Polynesia), 688 km (428 miles) to the west, as well as Easter Island, 1,929 km (1199 miles) to the east.