Indiana Jones Motorcycle Chase Filming Location

Last May I took a hike along the trail where the motorcycle chase scene was filmed from Indiana Jones and the Last Crusade.
If you drive up to the Mount Tamalpais Watershed and park at the first parking lot as you enter, look up the Concrete Pipe Road and Taylor Trail Loop on All Trails. Follow along Concrete Pipe Road, which is a fire road, and you'll recognize these exact locations.
The jousting scene was actually filmed farther down the road but I didn't have enough time to get to it as I had to meet up with some friends.