Where the Texas Hill Country meets the Chihuahuan Dessert sits thousands of acres of limestone rich ranch country. Found below the boots and hooves of those who inhabit and work the land is one of Earth’s most revered underground treasures, The Caverns of Sonora. The Caverns of Sonora is internationally recognized as one of the most beautiful show caves on the planet.A portion of the Caverns of Sonora is named the Crystal Palace because the calcite crystal formations sparkle like an enchanted castle. Located 15 miles southwest of Sonora, Texas on I-10, the Caverns of Sonora marks the halfway point between San Antonio, TX and Big Bend National Park.