The most epic waterfall in the world isn't in China, Russia, Canada or anywhere else.

The most epic waterfall in the world isn't in China, Russia, Canada or anywhere else. It's right here in the United States, but most Americans barely know it exists. This isn't your average waterfall. It's hidden more than 1,120 feet underground deep beneath Lookout Mountain. And the crazy part is, thousands of visitors go down there to see it every single day. Located just six miles from downtown Chattanooga, it's an unforgettable stop on any Tennessee road trip. Every year, over 400,000 people descend deep into the earth just to witness it. This is Ruby Falls, a stunning 145 foot underground waterfall, considered the tallest publicly accessible underground waterfall in the United States. But what makes this place incredible isn't just the waterfall, it's the journey to reach it. You take an elevator deep into the mountain, then continue through twisting cave passages that feel like an underground maze. The deeper you go, the more the outside world disappears. And then Ruby Falls finally appears. A 145 foot waterfall drops from the ceiling of the cave, surrounded by complete darkness. When the lights turn on, mist around the falls creates a scene that looks almost unreal. One surprising detail is that the cave stays around 60 degrees Fahrenheit year round, no matter how hot it gets outside. And if you want an even bigger challenge, the deepest darkness tour shuts off all the lights, leaving you in total darkness deep inside the mountain. Ruby Falls isn't just a waterfall, it's an entire hidden world beneath the ground in a place you would never expect to find one. So would you dare to go more than 1,100 feet underground just to see it?