On the W side of Stephens Passage just W of Mount Sumdum, extending 8 mi N, then 20 mi E to form Tracy Arm and 28 mi SE to form Endicott Arm, 45 mi. SE of Juneau, Coast Mts. 6 miles wide.
Named by Captain George Vancouver, Royal Navy (RN), after its discovery by Lieutenant Joseph Whidbey on August 13, 1794, for Holkham, a town in Norfolk, England (Wagner, 1937, p. 392). The Tlingit Indian name is "Sum Dum."
Dry Bay, Holkham Bay, Sand Bay, Sanford Cove, Williams Cove, Windham Bay,
Capes:Point Lookout, Point Hugh, Point Astley, Point Coke, Point League, Rock Point, Snettisham Peninsula, Point Windham,
Channels:Glaciers:Islands:Bushy Islands, Harbor Island, Midway Islands, Round Islet, Sumdum Island,
Lakes:Mountains:Streams:Anmer Creek, Gilbert Creek, Powers Creek, Sweetheart Creek, Taylor Creek,
Waterfalls: