Park at the corner of CO Highway 82 and Lincoln Creek Road (just before the bridge to Lincoln Creek Campground). Cross the bridge and turn left. Follow the river for about 20 yards till you see a trail on your right. Take this trail past the Sunset Boulder (on your left) till you reach the Cube Boulder (on your right). Here the trail splits. Take the obvious trail up and to the left following cairns till you reach the wall. About 20 minutes uphill in total.