The film is considered the first feature-length documentary. Nanook of the North (also known as Nanook of the North: A Story Of Life and Love In the Actual Arctic) is a 1922 silent documentary film by Robert J. Flaherty.
Nanook of the North  directed by Robert J. Flaherty. Presents a documentary on the life of an Eskimo family pitting their strength against a vast and inhospitable Arctic. Juxtaposes their struggle for survival against the elements with the warmth of the little family as they go about their daily affairs.