Hidden Lake Peaks is series of peaks with a maximum elevation of 7,088 feet (2,160 meters) that are located in the North Cascades, in Skagit County of Washington state. The peaks extend three miles southwest from the nearest higher peak called The Triad. Situated on the western boundary of North Cascades National Park, Hidden Lake Peaks are positioned west of the crest of the Cascade Range, approximately ten miles east of the town of Marblemount. The popular subsidiary peak, Hidden Lake Lookout (6890 ft), lies a half mile to the southwest of the highest summit. The mountain's name is taken from its proximity to Hidden Lake which lies in a cirque below the east aspect of these two main peaks. Precipitation runoff from Hidden Lake Peaks drains into Cascade River which is a tributary of the Skagit River.