The Arctic Cordillera is a large, deeply dissected chain of mountain ranges extending along the northeastern flank of the Arctic Archipelago from Ellesmere Island to the north-easternmost part of the Labrador Peninsula in northern Labrador and northern Quebec. The range is characterized by high glaciated peaks and ice caps, that includes Northern Canada's highest point at Barbeau Peak, reaching . The high elevations of this ecoregion is a Polar desert as lower elevated plains are dominated by patches of lichen and moss.