In Tongass National Forest on north coast of Chichagof Island, bounded on the NE by Port Althorp, on the NW by Cross Sound, and on the SW by Lisianski Inlet, 34 mi. WNW of Hoonah, Alex. Arch. 5 miles long.
Named in 1955 by U.S. Geological Survey (USGS) for Port Althorp.
George Islands, Inian Islands,
Bars:Dad Rock, Seiners Rock, South Rock,
Basins:Bays:The Hobbit Hole, Port Althorp, Cross Sound, Earl Cove, Elfin Cove, Granite Cove, Gull Cove, Idaho Inlet, Inian Cove, Lacy Cove, Lisianski Inlet, Mite Cove, Mosquito Cove, Pelican Harbor, Salt Chuck Bay, Soapstone Cove, Squid Bay, Stag Bay, Takanis Bay,
Capes:Point Satchrun, Point Lucan, Althorp Peninsula, Cape Bingham, Column Point, False Point, Inian Peninsula, Point Lavinia, Rock Point, Soapstone Point, South Point,
Channels:Lisianski Strait, Middle Pass, Mosquito Pass, North Inian Pass, South Inian Pass,
Cities:Cliffs:Dams:Islands:Althorp Rock, Gaff Rock, George Island, Inian Island, Junction Island, Mindalina Island, Miner Island, Mite Island, Shaw Island, Shaw Islands, Taylor Island, Three Hill Island, Yakobi Island,
Lakes:Goose Lake, Hoktaheen Lake, Surge Lake, Takanis Lake,
Mine:Apex Mine, El Nido Mine, Goldwin Mine,
Mountains:Mount Althorp, Apex Mountain, Basalt Knob, Bingham Peak, Crag Mountain, Craig Mountain, Cub Mountain, Mount Hill, Mineral Mountain, El Nido Peak, Pinnacle Peak, Mount Raatikainen, Takanis Peak, Tarn Mountain, Vein Mountain, Wedge Mountain, Yakobi Peak,
Rivers:Saltery River, Stag River, Steelhead River, Trail River,
Streams:Bohemia Creek, Cann Creek, Fault Creek, Fox Creek, Marble Creek, Margret Creek, Meadow Creek, Pelican Creek, Phonograph Creek, Takanis Creek,
Routes:Cities: