Falls of Truth (Earth-1529)

"This is where Avatar Wan unraveled the mysteries of harmony and focus. This is the birthplace of bending."

- - Killer Bee to Naruto Uzumaki

The Falls of Truth is a waterfall located on the Island Turtle. It is notably the place where Wan, the first Avatar, developed the primordial bending art techniques.

History
Legends tell the tale of Wan, the first Avatar, who traveled to the Island Turtle, a being as old as time, and sought to help his people by mastering the elemental energies possessed by the lion turtles, which was given to them by the Sage of Six Paths, said to be the creator of the world and God of the Shinobi. After witnessing the oppression of his people caused by the Chou family, Wan took the power of the lion turtles granted by the Sage in order to fight back against them. When Wan failed, he was to have his powers removed from him and banished to the Spirit Wilds.

However, the Sage noticed Wan's selfless motivations and that he had a good heart and spirit, and so allowed him to keep them, sending the peasant to the Falls of Truth at the Island Turtle so he could learn how to use it, becoming the first human to do so. After Wan was able to master all arts of bending, he became the first of the Avatars, leading the Sage of Six Paths to form the Ninshu sect, an organization devoted to helping and teaching others on how to bend the elements of nature.

After the formation of the hidden villages in the aftermath of the Warring States Period, the Island Turtle fell into the hands of the Land of Lightning's hidden village of Kumogakure. There, the Falls of Truth were rediscovered by humanity, and were used through history by the Jinchuriki of the Two-Tails and the Eight-Trails to control the tailed beasts inside them. The last of these Jinchuriki were Yugito Nii and Killer Bee.

Description
In the center of the waterfall lie a platform, and at its base an area for someone to concentrate. When doing this, an individual is transported to their mind, leading the waterfall to become a mirror that reflect the individual's true self. Knowing this property, the Raikages of Kumogakure used this to train Jinchuriki into controlling their tailed beasts. Behind the waterfall lie a temple where Jinchuriki can take the next step into controlling their beast.