Georgetown, Texas: Inner Space Caverns

Cave exposed in 1963 by Interstate roadbuilding and turned into a commercial attraction. Features the "Lake of the Moon," and the "Flowing Stone of Time."

Address:: 4200 N. I-35 Frontage Rd, Georgetown, TX
Directions:: I-35, Exit 259, north of Austin.
Hours:: Summer M-Sa 9-6, Su 10-6 (Call to verify) Local health policies may affect hours and access.
Phone:: 512-931-2283
Admission:: Adults $21.
RA Rates:: Worth a Detour

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Visitor Tips and News About Inner Space Caverns

Reports and tips from RoadsideAmerica.com visitors and Roadside America mobile tipsters. Some tips may not be verified. Submit your own tip.

Inner Space Caverns.

Inner Space Caverns

Definitely worth the stop! The zip line was fun, too!

[Jansie, 01/09/2023]

Inner Space Caverns.

Inner Space Caverns

Awesome experience. Went on a holiday weekend, so there was a bigger group, but so much to see on about an hour tour.

[Sarah, 07/10/2018]

Inner Space Caverns

Amazing! One of the best cavern tours I've been on. It gets pretty warm down there so I recommend shorts.

[Sunnysam, 04/06/2017]

The cave air temperature is a constant 72 F degrees.

Inner Space Cavern

I toured Inner Space often in college, and knew Meredith, who was the first to descend through the drill hole. He was not a highway worker but a caver, called by the highway construction guys to recover the drill bit. He was ecstatic when he looked around that beautiful room! By good luck, both he and the drill bit missed landing on one of the nicest formations.

In 1970 I went with cavers led by Meredith into back of the cave for mapping. I wonder if that part is open to tourists now? Inner Space is a real jewel of a cave!

[PixelAnnie, 04/03/2017]

Inner Space.