(2) Many people run Old Culp Valley Road starting from the top of Montezuma Grade. Since I was on my way home from the Ocotillo Wells OHV area, it made more sense to run the trail starting from the lower end. Just below the Culp Valley Campground, there’s a sweeping left-hander on S-22. Old Culp Valley Road intersects S-22 on the outside of this turn at the apex. It’s easy to miss, so you might have to find a turnout and backtrack. Use extra caution, as it’s a pretty abrupt entrance onto the trail. This photo shows the parking area for the Old Paroli Homesite, which is a spur off of Old Culp Valley Road.