The trailhead is at a signed parking lot located on the north side of Highway 150 10.1 miles east of Kamas.
This first part of the route is along a well constructed trail is often used by horsepackers. All major creek crossings are bridged.
From the trailhead, the trail heads north through aspen and pine forest and passes several beaver dams along the way. Most of the trail climbs gradually, but there are a few steep sections.
After five miles, the trail reaches a junction just below East Shingle Creek Lake. This is where this route meets the Upper Setting Route. Go straight (north) and to the lake. The lake is in a beautiful meadow and forest setting.
From the lake, take the trail east posted for Erickson Basin. The trail climbs gradually east for 0.75 mile to a minor pass. An abandoned trail (shown on the topo map) heads north and drops into Erickson Basin from the pass, but continue east on the main trail. The main trail to Erickson Basin heads downhill to the east and reaches South Erickson Lake 0.5 miles from the pass. The lake is in a spectacular setting with surrounded by meadows and high peaks. There is a junction at the lake that is not shown on the topo maps. The Erickson Creek/Smith and Morehouse Creek Trail is the one that heads north (left). The trail to the right that heads east is the one you want.
Continue on the lesser-used trail east to Big Elk Pass by following cairns the best you are able. Wall Peak is reached from Big Elk Pass via a steep boulder-hop and scramble to the southwest and along the ridge southwest to the summit.
Round trip distance is 14.2 miles to Wall Peak.
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A good pair of boots is needed.