Summary: Sevenmile Rim is a 20 mile loop of moderate difficulty. There are a few difficult spots, but stock vehicles with very good clearance can manage this trail if driven with great care. Highlights of the route include Monitor and Merrimac Buttes, Determination Towers and Uranium Arch. Route Description: Although this route has been marked by the Red Rock Four Wheelers Jeep Club, in coordination with the BLM, a good map and/or guidebook is essential. Markings can fade and signs have been known to disappear. Be prepared to find your own way.