Go East of Ashford Washington, approximately two miles turn right onto Kernahan Road. Follow the road 1.4 miles. Here it curves to the left, and becomes Skate Creek Road, which you follow for 3.3 miles. Turn onto FR-84, a smooth dirt road. Note that the sign for FR-84 is not visible when approaching the trailhead this way. After turning onto FR-84, continue on for 6.5 miles. Stay right when it forks. You are now on Road 8440. 2.6 miles along 8440, the road levels off and gets broad enough to park a dozen or more vehicles. This is Towhead Gap. Park here, at elevation 4320 feet. No pass is required. High Rock and the cabin are visible from the east side of the parking area.