Chariots of the Gods (1970 documentary)

Harald Reinl's cult documentary, based on the 1968 book Erinnerungen an die Zukunft: Ungelöste Rätsel der Vergangenheit (translated as Chariots of the Gods? Unsolved Mysteries of the Past) by Erich von Däniken, concerning ancient astronauts and their contributions to the foundations of human civilization. (IMDB)

Related

 * Mysteries of the Gods (1976 documentary)