fromTravel + Leisure
22 hours agoThe Tallest Underground Waterfall You Can Visit in the U.S. Is Hidden Inside This Tennessee Mountain
"The tour starts at the elevator, which takes you 260 feet underground into Lookout Mountain. The elevator has a glass door, so you can see the rocky mountain walls while going down," explains Baranick. "From there, a tour guide walks you through the cave, starting with a stop that explains our unique history, including how Ruby Falls was accidentally discovered!"
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