Mount Williamson is the second-highest peak in North Cascades National Park at 14,179 ft (4,321 m). Known for challenging glacier travel and alpine climbing, the mountain is visible from Lake Diablo and Cascade Pass and offers routes that demand technical skill and careful navigation.

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Geography

AddressMount Williamson, North Cascades, Washington, USAMount Williamson
ContinentNorth America
RegionPacific Northwest
SubregionNorth Cascade Range
CountryUnited States
StateWashington
CountyWhatcom County
DistrictNorth Cascades
TimezoneAmericaLos Angeles
Latitude48.673
Longitude-121.113
Maps
🌘6:15 PM LOCAL TIME

Mount Williamson rises to 14,179 ft (4,321 m) as the second-tallest summit in the North Cascades range, surpassed only by Mount Baker. The peak's remote location and persistent high-altitude glaciers make it a destination for advanced mountaineers. Approaches typically start from Cascade Pass or Lake Diablo, with crossing Bryant Glacier and other permanent snowfields required for most routes. Climbers seek secured ridges and snow descents, and weather-dependent conditions can change rapidly at altitude. The mountain is part of the national park's protected wilderness, offering dramatic vistas and challenging high-country terrain—skills in glacier travel, crevasse rescue, and alpine climbing are essential. Nearby landmarks include the rugged slopes of Saunders Mountain and the glacial basins of Hozameen Creek drainage.

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