The route to Tower Mountain is a Class 3 and involved exposed scrambling. Gear and experience recommended. Tower Mountain can be reached via the Cutthroat Pass Trailhead.
Map & Directions
Drive east on the North Cascades Highway (Highway 20) for 51 miles to Rainy Pass. Make a left (across the road from Maple Pass) and drive less than half a mile to an unpaved parking lot for the Pacific Crest Trail. Restrooms are available here.