heads on S slope of Mount Sumdum, trends SW to Powers Creek, 6 mi. E of Harbor I. and 50 mi. SE of Juneau, Coast Mts.
Tlingit Indian name reportedly representing the booming sound of the icebergs as they break off from the glacier; published in 1892 by U.S. Coast and Geodetic Survey (USC&GS) as "Soundon."
Dry Bay, Endicott Arm, Holkham Bay, Sand Bay, Sanford Cove, Tracy Arm, Williams Cove, Windham Bay,
Capes:Channels:Glaciers:Islands:Bushy Islands, Harbor Island, Round Islet, Sumdum Island,
Lakes:Icefall Lake, Lower Sweetheart Lake, Taylor Lake, Upper Sweetheart Lake,
Locales:Mine:Mountains:Rivers:Streams:Powers Creek, Spruce Creek, Taylor Creek,
Routes: