at head of Ranney Glacier, 44 mi. W of Valdez, Chugach Mts.
Name reported in 1960 by U.S. Geological Survey (USGS). Named by Lawrence Martin in 1910 for Lieutenant Joseph C. Castner, USA, who was with Captain E. F. Glenn during the exploration of 1898.
Harvard Arm, Jonah Bay, Miners Bay, Unakwik Inlet, Wells Bay, Yale Arm, Yale Arm College Fiord,
Capes:Glaciers:Baby Glacier, Baltimore Glacier, Brilliant Glacier, Dartmouth Glacier, Downer Glacier, Eliot Glacier, Harvard Glacier, Lafayette Glacier, Lowell Glacier, Meares Glacier, Muth Glacier, Radcliffe Glacier, Ranney Glacier, Smith Glacier, Williams Glacier, Yale Glacier,
Lakes:Mountains:Mount Castner, Mount Glenn, Mount Grosvenor, Unakwik Peak,
Ridges:Rivers:Streams: