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Recreation
📍 Georgetown, TX

Inner Space Cavern

Discovered during I-35 construction in 1963, Inner Space Cavern is one of the best-preserved caves in Texas — a unique Georgetown attraction for families and geology enthusiasts.

📋 Business Information

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Daily 9am–5pm
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Cave ToursFamilyGeorgetownGeology

💬 About Inner Space Cavern

Inner Space Cavern is one of Texas's most fascinating geological attractions, discovered in 1963 when highway crews drilling for I-35 broke through into a pristine underground cave system. The cavern features stunning stalactite and stalagmite formations developed over millions of years, along with fossilized remains of prehistoric animals including mammoths and saber-toothed tigers found preserved in the cave's chambers. Guided tours run throughout the day and cover the cave's geology and discovery story. The constant 72-degree cave temperature makes it a refreshing escape during hot Central Texas summers. Inner Space Cavern is located right off I-35 in Georgetown, making it an easy stop for families visiting the Georgetown area or passing through on I-35.