Canyon Sin Nombre is a stunning offroad trail in Anza-Borrego Desert State Park through the San Felipe Fault Network smashed between the Elsinore Fault and San Andres Fault. The upheaval of these faults is evident along the trail. Many call this trail "The Geologist Tour" or "The Journey Through Time" due to the numerous geological formations from the southwestward tilt of the desert sediments. These formations date back hundreds of millions of years and provide a visually impressive drive through this tectonic wonderland.