Ruby Falls is a 145 foot waterfall about 1,120 feet underground inside the caverns of Lookout Mountain. To see it, you need to spelunk deep into the Ruby Falls Cave in Chattanooga, Tennessee.

I really love looking at stalactites and stalagmites are pretty amazing to think about. How incredibly gradual the process is for these formations to occur. The drip drop of limestone deposits built up over millions of years and now here I am with a camera to witness it. Pretty cool to stop and think about it.

Exploring a cave is pretty eerie. Cold and wet, the terrain is completely unnatural from what we’ve evolved to navigate. It’s a thrilling and rewarding experience.

Finally, at the end of our journey through Ruby Falls Cave we finally found the 145 foot underground waterfall — Ruby Falls. It’s lit up by multi-color lights fading into arrays of colors like red, blue, pink and green.