Nature
Mount Sumdum is a prominent peak in southeastern Alaska, rising sharply above the fjords of Tracy Arm and Endicott Arm within the Tracy Arm–Fords Terror Wilderness and Tongass National Forest. Although modest by Alaskan standards, its summit climbs 6,666 feet above nearby tidewater in just 4.5 miles, giving it exceptional local relief. Its runoff and glacial meltwater drain into both inlets, and its south flank connects to the Sumdum Glacier. The mountain’s name, published in 1895 and later officially adopted, comes from a Tlingit word for the booming sound of calving icebergs, reflecting the wet, cold climate and glacial landscape that define the area.
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Hobart Bay, Alaska · United States
