Thomson is one of the most precipitous and pointy peaks near Snoqualmie Pass, and its Matterhorn-like form is a landmark from nearby summits. It is a long hike in from I-90 to its base, and the climb is sustained class-3 scrambling by its easiest route.
This peak is very often spelled "Mount Thompson", by the Montaineers, Beckey, and others, but it is named after famed Seattle municipal engineer R.H. Thomson, and the new USGS 7.5 minute map correctly spells his name. |