between Clarence Strait and Revillagigedo Channel, Alex. Arch.
Named in 1879 by W. H. Dall, US@C&GS. He probably took the name from the Duke of Northumberland, after whom the southern tip of this island had been named in 1793 by Captain Vancouver, Royal Navy (RN). See Cape Northumberland.
Ajax Reef, Bostwick Reef, East Bee Rock, Julius Reef, Martin Rock, Mule Rock, Tamgas Reef, Wallace Reef,
Bays:Coho Cove, Crab Bay, Customhouse Cove, Dog Bay, Hall Cove, Judd Harbor, Kelp Island Anchorage, Kwain Bay, Mary I Anchorage, Morse Cove, Niquette Harbor, Pond Bay, Ray Anchorage, Reef Harbor, Ryus Bay, Tamgas Harbor,
Capes:Point White, Point Arucenas, Annette Point, Cape Northumberland, Cape Northumberland, Crab Point, Creek Point, Deer Point, Duke Point, Edge Point, Flag Point, Form Point, Giant Point, Grave Point, Grey Point, Moss Point, Survey Point, Tent Point, Point Winslow, Yellow Point,
Channels:Cat Passage, Danger Passage, Dixon Entrance, Felice Strait,
Dams:Chester Lake Dam, Purple Lake Dam,
Hills:Islands:Annette Island, Barren Island, Bird Island, Cat Island, Danger Island, Dog Island, Double Islands, Drug Island, Duck Islands, Duke Island, East Island, Emmet Island, Fish Islands, Fripo Island, Goose Tongue Island, Grass Rock, Harris Island, Helen Island, Hotspur Island, Hub Rock, Indian Rock, Kelp Island, Lane Island, Little Rock, Mary Island, Roy Island, Ruth Island, Sister Islands, Snipe Island, Twin Islands, Vancouver Island, Vegas Island, Vegas Islands, Village Island, Werlick Island, West Rock, Whale Rock, White Rock, Yellow Rocks,
Lakes:Chester Lake, Crater Lake, Edgecombe Lake, Kwain Lake, Melanson Lake, Orchard Lake, Purple Lake, Purple Lake, Tamgas Lake, Trout Lake,
Mountains:Agassiz Mountain, Berry Knoll, Between Mountain, Blunt Mountain, Chapeau Mountain, Davison Mountain, Dubuque Mountain, Mount Lazaro, Leadville Mountain, Purple Mountain, Tamgas Mountain,
Mountain Passes:Buccleugh Sound, Sealed Passage,
Ridges:Streams:Cities: