Original post here. Sourced to boomstarkiller67 via the-bronx-remembers. Image is a promotional poster for the 1974 movie The Beauties and the Beast, which is summarized at IMDB by Jean-Marc Rocher as follows:

After a brief description of the legends of Bigfoot by the narrator, this film goes on to show what the hairy monster might really be doing with his time in the woods: watching women get naked and have sex. After spying on a couple of college girls sleeping together in a remote forest cabin, Bigfoot then stumbles across a couple having sex in the woods. After he chases off the man to have a little fun of his own with the woman, the film then leaves Bigfoot to follow the exploits of the two college girls as they encounter a troupe of skinny-dipping hippies.

Sounds like a real classic. But hey, it has Uschi Digard.