Hidden Lake Peaks, Mountain peak in North Cascades National Park, Washington, US.

Hidden Lake Peaks is a mountain summit in North Cascades National Park that reaches approximately 7,100 feet and displays granite formations, alpine meadows, and sheer cliffsides along its ridgeline. The landscape transitions from forested lower slopes through open alpine zones with expansive views across the surrounding Cascade Range.

The 14-by-14-foot gable-roof lookout on Hidden Lake Lookout (6,890 ft) was built by the U.S. Forest Service in 1931 and staffed until 1958, when many North Cascades lookouts closed. In 1961 Dr. Fred Darvill and the Skagit Alpine Club obtained a special use permit to restore and maintain it, and volunteers still keep it up. It was listed on the National Register of Historic Places on July 14, 1987.

The name comes from Hidden Lake, which sits in a cirque below the east side of the two main peaks. The 14-by-14-foot gable-roofed lookout is open to the public on a first-come, first-served basis for overnight stays, and a volunteer group keeps it in repair.

The trailhead for Hidden Lake Trail #745 sits at the end of Forest Service Road #1540, which branches off Cascade River Road 9.5 miles from Marblemount. The trail climbs 4.5 miles with a 2,900-foot gain, starting in forest and crossing wildflower meadows before heather and rock. The lookout is usually reachable from July to October depending on snow.

The 14-by-14-foot gable-roof lookout near the summit was built by the U.S. Forest Service in 1931 and staffed until 1958. In 1961 Dr. Fred Darvill and the Skagit Alpine Club obtained a special use permit to restore and maintain it. Volunteers now keep it open to the public, first-come-first-served, for overnight stays, generally July to October depending on snow.