Trail follows extremely narrow rocky canyon and is strictly hardcore. Main feature is a narrow opening just after Waypoint 04. A Hi-Lift jack mounted standing up on rear bumper is likely to get caught on rocks as you pass through, thus the name of the trail. Surprisingly, the second half of the loop is very scenic as you return along a high, narrow ridge. This trail is open to non-street-legal vehicles, but the ride would be extremely challenging.