Voyage to the Planet of Prehistoric Women is a 1968 film directed by Peter Bogdanovich. The film is an adapted version of Curtis Harrington's Voyage to the Prehistoric Planet, which in turn is adapted from the Russian 1962 feature Planeta Burg by Pavel Klushantsev. No footage from Planeta Burg appears in Voyage to the Planet of Prehistoric Women that did not appear in Voyage to the Prehistoric Planet, and much of the dubbing is the same. In the United States, this film is considered Public Domain and can be downloaded from the Internet Archive by following this link.