I've been to many Caverns across the US and this is only the second one that is naturally hot and humid inside. It was January and really cold outside but I regretted wearing a sweater about 20 minutes into the tour. You definitely want to wear something light or dress in layers. The adventure tour was fun. It wasn't too difficult and it's mostly paved but there were some sections that were wet and a few people on our tour almost slipped down. There were some unique cave formations like in most caves but I loved the painted wall with ancient animals. It made it feel more authentic somehow. Our tour guide (I think his name was Glen?) was amazing. He really put his heart into it. They do take your picture and you can purchase it in the gift shop after your tour. No food or drinks allowed on the tour which stinks cause I could have really used some water. Adventure tour is about an hour long and costs roughly $25. We really enjoyed our tour and highly recommend a stop here if you love caves.

This place is amazing. Just GO already! It doesn’t matter what time of year, whether it is hot or cold, or pouring down rain. This is a must-do in the Austin area! We plan to go back and do the additional tours available.

Excellent way to see caverns. There weren't as many steep spots and stairs as in other caverns we've visited. They also put down rubber mats in the spots that were slippery from water in the cavern. They're extremely busy so you'll encounter other tours but that was only mildly problematic. We only did the Adventure Tour as I have bad knees, but we still enjoyed it. Be mindful that they do have school tours so schedule your visit around that. We did not buy tickets in advance because they don't sell them, but we only waited 20 minutes or so.

We stopped here while traveling to do an adventure that was out of the sun and potential thunderstorms that were in the area. Our tour guide was excellent and since we only had 6 people on. Our tour it was very informative and we were able to ask a lot of questions. She took a few pictures of us at the pool. When we got closer to coming out of the cavern the sky opened up and let loose. We went in the gift shop and then stood out on the covered entry way over the cavern ramp and spoke with the staff off and on for 30-45 minutes while the storm passed over us. It was great talking more about weather and the area history. We loved our time here and would love to come back and explore the cavern more on one of the longer tours!

My husband and I visited Georgetown for our 25th wedding anniversary - just a quick getaway. We decided to visit Inner Space Cavern, and we're so glad we did. We went early on a Thursday morning. We had an amazing guide! Kyle was knowledgeable, friendly, funny, and patient. I recommend carrying cash so you can tip your guide - it is allowed, but the sign indicating that is very small. I'd also recommend going early to beat the field trips. As we were leaving, we passed several groups of kids on field trips.

First time visit at this cavern. Disappointed no senior discounts for the tour but we had a good time anyways. Interesting tour and Wesley was great guide ( it’s his birthday today July 14).

This was a good, if slightly pricey, one hour visit. The guides are good and the cavern is beautiful. It would have been nice to have more time to explore and take pictures at our own pace. The guides try to take their time but they have to move tours through constantly. So expect a lot of information, pretty caverns but it is a bit rushed. If we lived in the area or had more time, we may have tried the more adventurous tours.