This is the longest climb of the northern approaches. Start five miles in from Artist Point Trailhead by taking Chain Lakes Trail #682 to Ptarmigan Ridge Trail #682.1. Three miles in from the Chain Lakes/Ptarmigan Ridge junction the Ptarmigan Ridge Trail reaches the base of Coleman Pinnacle. The trail continues another half mile to Camp Kiser. Beyond this point, a primitive boot path, recommended for experienced mountaineers, leads to advanced climbing routes on Mt. Baker.