The region consists of Baffin Island, the Belcher Islands, Akimiski Island, Mansel Island, Prince Charles Island, Bylot Island, Devon Island, Cornwallis Island, Bathurst Island, Amund Ringnes Island, Ellef Ringnes Island, Axel Heiberg Island, Ellesmere Island, the Melville Peninsula, the eastern part of Melville Island, and the northern parts of Prince of Wales Island, and Somerset Island, along with some smaller islands.