Horseshoe Basin Trail

Horseshoe Basin is a 1.6-mile one-way spur (3.2 miles round trip) from the Cascade Pass–Stehekin trail near Pelton Basin Camp. It climbs about 1,315 feet to a steep-walled cirque where waterfalls drop from glaciers hidden above the rim. That distance covers only the spur; reaching its junction already takes a substantial backcountry hike from the Cascade Pass trailhead or the Stehekin side. Treat this as a side trip on a longer outing, not a stand-alone walk from the road.

Near Pelton Basin Camp, turn east onto narrow, sometimes brushy tread. The climb is steep and sustained. Allow roughly 3–4 hours for the spur and return, including a short stop in the basin; that is an estimate, and the longer approach adds many hours. The connected mapped tread we could verify is shorter than the published 1.6-mile one-way figure and ends below the reported high point. The final stretch is not fully resolved in the map trace, so carry current park mapping and check conditions before setting out.

The trail enters a high, bowl-shaped landscape of rock walls, waterfalls, green slopes and seasonal flowers, with views across the valley to surrounding peaks. The falls come from glaciers tucked above the walls, out of sight from below. For a photograph, frame the waterfalls with the basin floor or foreground rock to show the scale of the cirque.

Gold prospectors worked around Basin Creek in the late 1800s. In 1891, the Black Warrior and Blue Devil claims changed hands for $30,000 and renewed interest in the basin. A plan to drive a four-mile tunnel beneath the pinnacles toward mines near Thunder Creek was eventually defeated by avalanches, rockslides and the difficulty of moving supplies; by 1914 the project had stalled. The basin’s dramatic shape is older still, carved by repeated glaciation.

The Cascade Pass trailhead is at the end of Cascade River Road, 23.1 miles from Marblemount; the last miles are rough, narrow and steep, and parking at the pass is limited. The Horseshoe Basin junction lies well beyond that lot, near Pelton Basin Camp. Snow can remain on the higher approach into July, when steep sections may require an ice axe and the skills to use it. Pets are prohibited in the Cascade Pass area. Overnight stays require a backcountry permit and camping is limited to designated sites.