This particular trail starts out innocuous enough but becomes a grueling climb often accentuated by several hike-a-bike sections during the final few miles as you near the summit.
You can begin this ride by taking Camino Doce Road. Follow the road toward the mountains until you reach a three way intersection. There are no dedicated parking spots but you can park just off B016, behind the stop sign and begin your ride on the road that is furthest to the right.
The first couple of miles of this road consists of a slight climb and several sandy sections. You'll follow this road past a green gate (please close behind you) and it will take you past the ruins of old mining quarters. This is a nice place to stop for a break or to take in the surrounding scenery.
Continue along the road toward the mountains from the ruins. The road will become steeper and less sandy for the next couple of miles. Eventually, the road will become very steep and nearly unridable with areas that are so rough, you'll need to spend time hiking with your bike.
Eventually, you'll reach the summit. It is accentuated by an old cabin. Be sure to stop and sign the cabin guest book in addition to taking in the beautiful views.