Inner Space Cavern is one of the most well-preserved caves considering it was hidden for over 10,000 years before being discovered. There are so many amazing things about it – unique rock formations, bats, and even a sinkhole – but the most interesting aspect is easily the fact that some of the cavern walls appear to glow in the dark. Skip ahead to 3:39 and 11:39 in the video below to witness the incredible phenomenon:

A perfect family-friendly, mildly spooky attraction for Halloween, wouldn’t you agree? The cave is located at 4200 S. I-35 Frontage Rd., Georgetown, TX 78626 and offers several different tours for people of all ages and abilities – more information on that can be found here.

Have you ever visited Inner Space Cavern? Did you see the glow-in-the-dark walls? Let us know what your experience was like!

OnlyInYourState may earn compensation through affiliate links in this article.

Explore Texas