Mamie Peak is the large, complex mass of granite poised above the Hannegan Pass Trail head. A limited amount of excellent cragging and multipitch climbing has been developed here in recent years. Relatively easy access and spectacular scenery make for a nice alternative to the more popular climbing areas.

Depending on the snow year the season can be short. While the Ruth Creek Valley has a horrible reputation for biting black flies in mid-summer the crag seems high enough off the valley floor to avoid that issue all together.

From I-5 take Exit 255 and follow Highway 542 46 miles east. Shortly before the crossing of the Nooksack River take a left on Forest Service Road #32 and follow it 4 miles to road end at the Hannegan Pass Trailhead. Mamie Peak looms above.

Follow the trail for ~4 minutes until you reach a clearing with a large white boulder perched several hundred overhead. Continue through the clearing keeping careful watch for a shallow cross ditch across the trail. Immediately after the crossditch make a hard left, thrash through 20' of brush, and pop out into open forest and a dry creekbed. Follow the creekbed up to the large white boulder. Continue up another 150' then traverse left through light brush towards a 20' tall snag on the edge of forest. A faint and steep boot-path switchbacks up the hillside. Eventually traversing up and left under mossy slabs. At a gully continue up 30' then cut left again into more forest. Continue up another 5 minutes or so then traverse back right to the base of the crag. Should take about an hour with 1200' of gain.