Amanoiwato

is a technique which allows its users to create a spacial disruption in the voids of space, ultimately creating a portal. Using this portal, the user can travel a long distance away, by simply stepping through said portal. It only works with long range distances, and can not be used in short range not mid. This technique is used by Yamagakure to transport tools, objects, as well as people without any concerns. Allowing them to reach said destination. However, the further the distance, the more chakra costly it is. Making it a well balanced technique.

With the later improvement of Sigma Uchiha, this technique became quite intimidating. As he would create a dimension within the void at which he passes through. It seems this dimension is Sigma exclusive only, as others of the technique haven't been able to pass through it.

Trivia

 * This technique's name comes from, the cave at which drove  in.