Ilsa, Harem Keeper of the Oil Sheiks (1976) (Better Quality)

The opening shot shows five guys and two older women standing in what looks like a real stone tunnel or cave — dim lighting, robes hanging open, gold jewelry on their necks, thick beards on most of the men. One blonde MILF with big tits and bangs is front and center, getting spit on her back before turning around to suck one guy while another mounts her from behind in doggy. Camera stays wide for long stretches, showing full bodies — you see the second woman, darker hair, also thick and mature, getting fucked standing up against the wall while another guy jerks himself waiting his turn. Interior scenes shift to a bedroom with fruit on the sheets — the same blonde is now in a close embrace, taking a long deep blowjob with cumshot finishing on her face. One indoor living room shot shows two slim guys talking to the dark-haired woman on a rug, glasses on one guy, mirror in the background, but no sex there. The vibe is ritualistic, slow, with emphasis on group energy and body types — older women, muscular men, lots of facial hair and dim candle-like lighting throughout.