Continue your San Rafael 4x4 adventure with Big Hole Wash, a moderate 5-mile crossover. The trail has a few mild challenges for stock 4x4s. There are numerous deep washouts and one loose dirt hill. The trail has a couple of good-sized campsites with rock fire circles. Near the trail's eastern end is an old stone culvert left over from the Spirit Railroad that ran across the area over 140 years ago. The sandstone rocks are still standing in their original condition, but all the ground has washed away around them, creating a unique rock formation.