Lookout Mountain Attractions Tickets 2025. Ruby falls is the country’s tallest and deepest underground waterfall at 260 feet, while rock city is where you can. Pick your adventure and journey deep inside historic lookout mountain to see the tallest underground cave waterfall open to the public in the united states!
Check out our tickets and hours to plan your perfect visit! Head to the great outdoors on a trip to boone, nc, to visit grandfather mountain, which is one of the tallest mountains in the.