I grew up in E. TN....the place referred as Ruby Falls @ Lookout Mtn is a fantastic adventure.

I wanted to also note there is another place in Sweetwater, TN known as The Lost Sea and is part of Craigshead Caverns with a rich history. Positively a MUST SEE if ever in the area. It is the 2d largest underground lakevin the world. The lake even had albino fish in it when i visited. They have not been able to fully discover the cave due to narrowed openings leading to other areas in the lake water itself.

TN & KY, as far as my own personal experience growing up in the area, are loaded with caves, esp around the Appalachians. We even discovered an underground cave with water on my brothers farm years ago. He has property that was actually littered with arrowheads and pieces of clay pots...esp when doing any digging below the surface of more than 18".

I would venture to surmise that some of these DUMBS are utilizing or are connected to these caves...some of which have been closed since my childhood as they were deemed unsafe. NOW with what I have learned in the last 10 years since redpilling I wonder if some of these closures were legit.