Ruby Falls lies at the end of the trail, made even more beautiful by the colored light display surrounding it. It is the tallest and deepest underground waterfall open to the public in the USA 14.

Situated deep within Lookout Mountain, Ruby Falls is an underground waterfall that offers a unique and mystical experience. Discovered in 1928, the falls are located within a cavern and can only ...

Located 1,120 feet below the surface of the mountain and plummeting 145 feet, Ruby Falls is America's deepest and tallest underground waterfall. Visitors can take an elevator underground and walk ...