U can still find places where no human has been before. The Grand Canyon is an immense place, almost unfathomable in scale, and one of the last places in the American West to be explored.
Deep within this vast wilderness are secret and intimate tributaries rarely visited by man, hiding some of the Canyon’s most remarkable features. A group of film making canyoneers made an awesome documentary of the The Last of the Great Unknown.
More at lastofthegreatunknown.com