The Oat Hill mine road is a ong-out-of-use mine road that starts with four miles of moderate climb and finishes with very challenging two technical miles. Exceptional views of the Napa Valley, busy with hikers on the weekends, regular local use during the week.
How to get there:
Highway 29 to Calistoga. On north side of town the trailhead is at the Silverado Trail/hy 29
Be sure to check out PMS (Palisades Mt. Sport) Bike Shop for directions and info on the trail. They