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Duu Guusd Heritage Site/Conservancy is located on the north-west corner of Graham Island, Haida Gwaii, about 30 kilometres west of the communities of Old Massett and Masset. It is part of an archipelago-wide system of protected areas that includes Gwaii Haanas National Park Reserve and Haida Heritage Site, several provincial parks and ecological reserves, and ten other heritage sites/conservancies. In total, half of the land base of Haida Gwaii is now in protected status. The terrestrial component of the heritage site/conservancy covers 143,593 hectares and extends from the western side of Naden Harbour along Dixon Entrance to Langara Island, and south along the Pacific Ocean coastline to Rennell Sound. The elevation range is from sea level to 865 metres.

A marine component/foreshore area covers an area of 84,173 hectares.