Inner Space Cavern

Inner Space Cavern, Georgetown: Tickets, Tours, Hours, Address, Inner Space Cavern Reviews: 4.5/5

Inner Space Cavern
4.5
10:00 AM - 5:00 PM
Monday
9:00 AM - 4:00 PM
Tuesday
9:00 AM - 4:00 PM
Wednesday
9:00 AM - 4:00 PM
Thursday
9:00 AM - 4:00 PM
Friday
9:00 AM - 4:00 PM
Saturday
10:00 AM - 5:00 PM
Sunday
10:00 AM - 5:00 PM
About
Inner Space Cavern was discovered in 1963 by the Texas Highway Department. During construction of Interstate 35, they were required to do regulation core testing, which required them to drill into the ground. As they did this, they inadvertently drilled into the cave 8 times out of the 20 samples they took. Once they lost those 8 drill bits, they knew they hit a cave. They searched all over the surrounding area but could not find any access into the cave. So, they drilled a 2 foot wide hole down through 33.5 feet of limestone bedrock. The hole became known as the Discovery Hole as it was the very first entrance into the cave (and the only one for several months!). As they explored, they have found over five miles of cave, making Inner Space Cavern the fourth largest cavern in Texas!
Suggested duration
2-3 hours
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Popular mentions

4.5
682 reviews
Excellent
374
Very good
242
Average
56
Poor
5
Terrible
6

DonnaRA
Sargent, TX53 contributions
Nice for Younger Folks
Jul 2020 • Friends
It was a pretty long walk for old grandma but the younger kids did great! It was interesting and COOL inside the Cavern. Had a nice gift shop.
Written June 12, 2021
This review is the subjective opinion of a Tripadvisor member and not of Tripadvisor LLC.

Ks7r0
Garland, TX15 contributions
Must visit
Apr 2021 • Solo
Definitely recommend this place to visit, it was my first time being in a cavern and I liked it. Our guide girl was experienced and funny.
Written April 25, 2021
This review is the subjective opinion of a Tripadvisor member and not of Tripadvisor LLC.

Marcia B
Palm Springs, CA170 contributions
Great tour of the underground cavern
Feb 2021
Be sure to wear walking shoes as you descend into the caverns and also have to walk up at the end. Some very low areas so if you are tall, you have to be able to duck down to walk through the various areas. Our guide was very knowledgeable and it is worth a visit.
Written February 28, 2021
This review is the subjective opinion of a Tripadvisor member and not of Tripadvisor LLC.

Robby G C
Toronto, Canada78,123 contributions
Bates and stalactites
Feb 2020
I liked that Inner Space Cavern. We walked and everything was flat. We could hear the traffic.

However the caverns showed beautiful attractions as in the stalactites and other attractions.

The guide was really nice. We learned a lot here!

Sometimes there are bats. Enjoying the

A must see!
Written January 8, 2021
This review is the subjective opinion of a Tripadvisor member and not of Tripadvisor LLC.

RockingTRancher
2 contributions
Amazing cave experience
Nov 2020
The guides are super friendly and share a wealth of knowledge. Prefer this cafe to the Longhorn Caves.
Written December 22, 2020
This review is the subjective opinion of a Tripadvisor member and not of Tripadvisor LLC.

sashadog24
Excelsior Springs, MO170 contributions
Great experience!
Dec 2020 • Couples
We are from MO the cave state so we love going to caves. This cave is beautiful with so much history. Our tour guide was awesome too!
Written December 9, 2020
This review is the subjective opinion of a Tripadvisor member and not of Tripadvisor LLC.

Clareen65
Killeen, TX22 contributions
Please leave your babies at home!!!
Nov 2020 • Friends
This is a really neat cave to explore! The tour guide was funny and knowledgeable!! Reasonable prices for the tickets. The only thing is it’s really not for little kids or for sure NOT babies!!! There was a baby on our tour and he whined and cried most of the tour ruining it for everyone else that wanted to hear the tour guide:(. I would say kids 7 and under need not go on this tour. They wouldn’t understand what they were even looking at!
Written November 8, 2020
This review is the subjective opinion of a Tripadvisor member and not of Tripadvisor LLC.

Hollijean
Fort Worth, TX155 contributions
Just like I remember as a kid!
Oct 2020
I have not been to this cavern in about 35 years. I remember as a kid how cool I thought it was. They had a tram back in the day that would take you down into the cave but now you have to walk down the steep slope by yourself. The tour was great but it was very slippery in some places. Please be advised if you are overweight climbing back out of the cave is exhausting. It is uphill all the way.
Written October 27, 2020
This review is the subjective opinion of a Tripadvisor member and not of Tripadvisor LLC.

Mark062017
Bossier City, LA146 contributions
Must Do
Oct 2020 • Couples
Our friends have been here before and really enjoyed it. They took us there this past weekend. The story of how it was discovered and how the animals got in there was interesting. You have to do a little walking and sometimes on wet surfaces so be careful. We saw a few bats. It is humid in there. I wasn’t expecting it to be that humid. We had a great time, took some cool pictures and bought a few souvenirs. I would definitely recommend going here.
Written October 12, 2020
This review is the subjective opinion of a Tripadvisor member and not of Tripadvisor LLC.

ochoaca
Houston, TX59 contributions
Super interesting and fun!
Oct 2020 • Family
We had a great time on the adventure tour with Michelle! Our 11 year old thought it was “a bit boring”, but our 7 and 13 year old liked it as did we! A fascinating look at a whole new world.
Written October 8, 2020
This review is the subjective opinion of a Tripadvisor member and not of Tripadvisor LLC.

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