Be aware of migrant activity in the area because of its location near the border.
This doubletrack was once used to access the mines in the surrounding area through the hills and valleys. There is no cell phone service, no water, and not much chance for help. Watch your speed on some of the rocky downhill sections.
At about 4,500 feet, the trail is a nice alternative from Tucson's summer heat but it is still dry and hot here for much of the year. A great ride option in the winter.
You'll have great views into Mexico during the first part of the ride. You'll also come across several old mine sites and the abandoned trailers of the old prospectors. At about 10 miles, you'll come to an old dam built in the 1920's that served the old mines. You'll see the distinctive Montana Peak in the east.
Eventually, you join the old Ruby Road and head back to where you parked at the trailhead.