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Inner Space Cavern
Attraction
4.7 (7180 reviews)
4200 S I-35 Frontage Rd, Georgetown, TX 78626
+1 512-931-2283
Did You Know?
Discovery Year
Inner Space Cavern was discovered accidentally in 1963 by the Texas Highway Department during the construction of Interstate 35, when a core drill bit dropped 26 feet into a void.
Ice Age Fossils
Due to its discovery during construction and subsequent preservation, the cavern contains exceptionally well-preserved remains of prehistoric Ice Age animals, including mammoths, saber-toothed tigers, and a prehistoric bison.
Constant Temperature
The cave maintains a consistent temperature of approximately 70 degrees Fahrenheit (21 degrees Celsius) year-round, offering a cool escape from the Texas heat.
Unique Formations
Inner Space Cavern is renowned for its diverse and beautiful cave formations, including stalactites, stalagmites, columns, and particularly impressive flowstones that resemble frozen waterfalls.
Highlights from Reviews
• knowledgeable guides
Tour guides are highly knowledgeable, engaging, and passionate, making the experience educational and entertaining with historical and geological facts.
• stunning formations
The caverns feature beautiful, otherworldly stalactites, stalagmites, and unique rock formations, showcasing nature's artistry.
• cool escape
The cave offers a comfortably cool 72°F temperature, providing a refreshing escape from hot weather, especially in Texas.
• diverse tour options
Multiple tour types are available, from basic to adventurous 'wild cave' experiences, catering to different interests and physical abilities.
• family-friendly activities
Beyond the cave, there are activities like zip-lining, gold panning, a gift shop, and a playground, making it suitable for families.
