Mount Thomson

Mount Thomson reaches an elevation of 1,998 meters and features steep formations within the Mount Baker-Snoqualmie National Forest of Washington state.

The mountain received its name from Reginald Heber Thomson, a Seattle city engineer, and witnessed its first recorded ascent in 1917 by climbers Joe Hazard and B. French.

The United States Board on Geographic Names officially adopted the spelling 'Thomson' in 1981, correcting the previous spelling variation 'Thompson' used in regional documents.

Climbers accessing Mount Thomson require technical gear and experience for the East Ridge route, which includes class-3 scrambling sections through exposed terrain.

The mountain's geological structure displays pointed formations similar to the Matterhorn, making it a distinct landmark within the Alpine Lakes Wilderness area.

Location: King County

Location: Washington

Elevation above the sea: 1,998 m

GPS coordinates: 47.47230,-121.36064

Latest update: March 20, 2025 05:08