Before you get to the narrow Sandstone Canyon, you'll have to pass through Split Mountain and a very wide Fish Creek Wash. Along the way you'll encounter massive, towering walls and really interesting exposed rock. Once inside the canyon, you can decide to stop and hike at the point where giant rocks are blocking the route. But if you're a very experienced driver, you may be able to make it through. A hike to Wind Caves is recommended. This area is restricted to street-legal vehicles only.
A fault occurred through Split Mountain about 20 million years ago. As flood waters passed through the fault it gradually widened, exposing fascinating rock layers. Over 40,000 acres of watershed is funneled through the canyon and continues eastward about 20 miles to the Salton Sea.