Falls of Truth

The, located on an island in the Land of Lightning, is the place where Killer Bee trained to control the Eight-Tailed Giant Ox. It is a mysterious place where by sitting on the platform at the base of the falls, and concentrating the falls transport one into the inner world of the mind. Once there the falls becomes a mirror which reflects one's true self. Behind the falls there is a place with many structures, and a picture depicting the Eight-Tails on a giant wall in an unknown chamber. Due to Bee commenting this will be where Naruto Uzumaki will fight and learn to control the Nine-Tailed Demon Fox, it can be presumed this is where Killer Bee also fought the Eight-Tails to control it.