Porter Fork to Gobbler’s Knob: Drive 3.4 miles up beyond the Mill Creek entrance booth and look for the Porter Fork trailhead on the right. A complex route in and under significant avalanche terrain to the crown of the Big Cottonwood/Mill Creek ridgeline. It’s a strenuous gain of about 4200’ over 4 miles to the summit and not suitable for novices or large groups. Dogs are allowed in Mill Creek with alternating on/off leash days – check with the Forest Service for recent policy/schedules. The Forest Service charges a nominal day fee for canyon recreation. Season passes are also sold.