Sodom and Gomorrah: The Last Seven Days (1975)

Begins with a classically stupid "braino" by a New York Judge, who pronounces that some of the Mitchell Bros. movies "...would have violated community standards in Sodom and Gomorrah..." (For the records, sexual practices in pre-Hebraic Palestine embraced temple prostitution (both male and female), anal intercourse, exhibitionism, orgies and a good deal else.)

The story opens with a fight and a familiar story. Lot, his wife and daughters separate from the rest of the tribe and head for the unknown city of Sodom. There, they become temporarily enmeshed with a society where anal intercourse is a brutally enforced community standard. Shortly afterward, two space travelers with an incomprehensible obsession about human venereal disease "raid the party", sparing only Lot and his family. (This last element seems to have been adapted from Eric Von Daniken's books. He was popular at that time.)

Overall, this is the best erotic film ever made. Attractive young people having pleasantly varied sex with no barriers in sight. It leaves the bored supermodels of today's porn films far behind. The SF Bay Area was a great place to be in the mid-'70s if you were horny. This was filmed near Castro Valley, due to the better filming weather. Just warm enough to make romping around in the nude to be delightfully comfortable.

This is a must see film.  Made on a half-million dollar budget 34 years ago, this is probably (adjusted for inflation) the highest budget porno of all time.

Is it redundant to say that there is a lot of anal sex in Sodom? For the benefit of those who are not native speakers of English and/or those who are not familiar with the bible, the word "sodomy" -- which means anal intercouse -- comes from the name of the biblical city called Sodom.

If you read Genesis, you'll recognize some of the plot and dialog pulled directly from the bible.

And yet, the film is anything but true to the Old Testament, e.g. Yahweh (God) is a spaceship chimpanzee with the voice of John Wayne. He is assisted by an astronaut played by Tyler Reynolds, who goes down to Earth, to the city of Sodom to help fulfill Yahweh's plans, and to get laid.

Anal sex up in the branches of an olive tree is aided by crushing the oil from fresh olives onto one's cock for lubrication. I've never seen so much oil come out of one hand-crushed olive -- those biblical olives were truly magical.

The final orgy scene is one of the longest and most peopled in XXX history.