Visiting the Caverns of Sonora
Located in Texas Hill Country, and about a 3-hour drive from Dripping Springs, the Caverns of Sonora are among the world’s most impressive caves. The caverns are a must-see when exploring the Southwest.
The Caverns of Sonora are consistently ranked among the most spectacular caves in the world. What they lack in size is made up for by the sheer abundance and variety of their calcite formations. Among them, visitors will experience cave bacon, which is a type of flowstone that resembles the popular breakfast food, soda straw stalactites, and cave popcorn. The most famous of the cave’s formations is the Butterfly, which consists of two fishtail helictite growths that share the same attachment point. This formation is the only one of its kind in the world.
History of Sonora Caverns
According to the Caverns of Sonora park website, the cave formed out of limestone that is estimated to be about 100 million years old. Approximately 1.5-5 million years ago, the caverns formed as underground gases escaping through an ancient fault mixed with groundwater in the area. The resulting acidic water dissolved the surrounding limestone until the water drained from the cave about 1-3 million years ago. Since that time, the action of dripping water has formed some of the purest and most complex calcite formations ever discovered. The Caverns of Sonora are also one of the most active caves in the world. Upwards of 95% of their formations are still growing.
The cave was originally discovered on the Mayfield family ranch at the turn of the twentieth century. In the mid-1950s, speleologists discovered the full extent of the caverns, at which point preservation efforts began in earnest. The Caverns of Sonora park opened in 1960, and in 1966 was designated a National Natural Landmark by the United States Department of the Interior.
Today, the park operates as a chance for visitors to experience an exciting geology lesson and to preserve the cave’s extremely delicate formations.
Sonora Park Activities
A visit to the Caverns of Sonora is a thrilling experience for both kids and adults, making it an excellent family trip. The park is located 15 miles southwest of the town of Sonora, Texas, and directly off Interstate 10. It is about 210 miles west of Austin.
The park is open every day except December 25th. From March 1st through Labor Day, the park’s operating hours are 8:00 a.m. to 6:00 p.m. Starting the Tuesday after Labor Day until February 29th, operating hours are 9:00 a.m. to 5:00 p.m.
Visitors may enter the cave by guided tours only, which leave at regular intervals from the park’s Visitor Center. Due to the humidity underground, the temperature feels as though it is about 85 degrees; therefore, there is no need to bundle up before heading into the cave. The use of cameras is encouraged, but bags, containers, food, and tobacco products of any kind are prohibited to protect the cave’s unique formations. Pets are also not allowed inside the caverns; however, there are free on-site kennels if you are traveling with a companion animal.
The park’s main tour is the Crystal Palace tour, which covers just under two miles of trail and lasts about two hours. Visitors enter the cave through its natural entrance and are guided through its active rooms. The park offers group tours of the Crystal Palace for schools, church youth groups, and scouts. Advanced reservations are required and can be made by calling the park at (325) 387-3105 or (325) 387-6507.
The park also offers a Photo Tour specifically for amateur and professional photographers and a Discovery Challenge for more adventurous visitors. The Discovery Challenge is led by an experience spelunker and includes a 50-foot rappel into the Devil’s Pit. Reservations are required for both of these tours as well.
Above ground, the park also offers activities to entertain families, such as gemstone panning and workshops on cave safety and orienteering. A nature trail offers visitors a glimpse at Hill Country karst landscape and wildlife, such as white-tail deer, armadillos, turkeys, and many varieties of wild sheep. The Visitor Center boasts a well-stocked gift shop where park visitors can purchase fresh cream and fudge made on-site. The park also has tent and RV camping to complete the outdoor experience.
Natural Splendor in West Texas
The Caverns of Sonora are a rare jewel tucked away in the vastness of west Texas. For geology buffs and casual observers alike, the caverns present an awe-inspiring glimpse of one of nature’s most beautiful processes. Visitors will not be disappointed by their outdoor adventure on the edge of the desert and will leave wondering what is going on in the earth below their feet.