Ducie Island is an uninhabited atoll in the Pitcairn Islands group, which also includes Pitcairn, Henderson and Oeno islands. Ducie lies east of Pitcairn Island, and east of Henderson Island, and has a total area of 1.5 square miles, which includes the lagoon. It is 1.5 miles long, measured northeast to southwest, and about 1 mile wide. The island is compos…Ducie Island is an uninhabited atoll in the Pitcairn Islands group, which also includes Pitcairn, Henderson and Oeno islands. Ducie lies east of Pitcairn Island, and east of Henderson Island, and has a total area of 1.5 square miles, which includes the lagoon. It is 1.5 miles long, measured northeast to southwest, and about 1 mile wide. The island is composed of four islets: Acadia, Pandora, Westward and Edwards.