Liberty Mountain, Mountain summit in Snohomish County, United States.

Liberty Mountain is a peak in the Boulder River Wilderness featuring dense coniferous forests and rocky slopes throughout its elevation. The terrain includes steep sections and exposed stone formations that create a rugged landscape.

The mountain was named by miners working near Silverton in the late 1800s. It became part of the Mount Baker-Snoqualmie National Forest under federal protection.

The name comes from old miners in the Silverton area, who left it on the peak. The summit lies 2.3 miles south of Three Fingers, and the surrounding slopes are conifer forest. July through September brings the clearest weather for viewing the peak.

Liberty Mountain lies in the Boulder River Wilderness, 2.3 miles south of Three Fingers, on Mount Baker-Snowqualie National Forest land. July through September offers the most favorable weather for climbing. Snow tends to be wet and heavy, raising avalanche danger in winter.

Liberty Mountain rises 5,680 feet (1,730 m) at the western edge of the North Cascades, while the Cebuano source gives 1,657 m; the summit sits on land managed by the Mount Baker-Snoqualmie National Forest. Its name came from old miners in the Silverton area.