Follow the routes of mule pack trains across the Southwest on the Old Spanish National Historic Trail between Santa Fe, New Mexico, and Los Angeles, California. New Mexican traders moved locally produced merchandise across what are now six states to exchange for mules and horses.
Photo: "The San Rafael Swell is a huge craggy geologic feature (an anticline), about 75 miles by 40 miles, located in south-central Utah approximately 30 miles west of Green River." - NPS