The Site consists of the outer parts of two broad glacial valleys, both with many-channelled braided rivers. The rivers reach a fjord in a shared delta with large mudflats exposed at low tide. Various habitats are found, including meadows, marshes and pools. They provide feeding and breeding grounds for several bird species, such as the long-tailed duck and the endemic Greenland mallard. In addition, the Site contains the most important moulting area in Greenland for the king eider. Qínnquata Marraa and Kuussuaq also holds a significant portion of the biogeographical population of the Greenland white-fronted goose. The Site is remote, and is far from any human settlements, but hunting occasionally occurs there.