East of Salt Lake City and Kamas, the Mirror Lake / Mill Hollow Snowmobile Complex has groomed snowmobile trails traversing the Unita Mountains at elevations ranging from 7,000 to 13,000 feet. There are nine groomed trails totalling 150 miles. There are four major trailheads serving this complex.
The North Fork snowmobiling trailhead for the Mirror Lake / Mill Hollow Complex is located 12 miles east of Kamas on SR150.
The Mirror Lake Trail (A) is an easy 35 mile long trail. There are limited open play areas off this route.
The Whitney Trail (B) is a marked 7 mile route.
The Soapstone Trail © is a 30 mile route starting near Soapstone Gate at Milepost 14.5 on SR150 and climbs to wide open play areas.
The Wolf Creek Trail (D) is a well groomed route from the Hanna Trailhead. It accesses a popular hill climbing area near Wolf Creek Pass.
Overall, Mirror Lake / Mill Hollow Complex is the 5th most popular snowmobile trail of all 14 snowmobiling rides in Utah.