Chariots of the Gods (1970 documentary)

Harald Reinl's cult documentary, based on the 1968 book "Erinnerungen an die Zukunft: Ungelöste Rätsel der Vergangenheit" (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)