The Big Doll House (1971)

Thrown into a remote Philippine prison somewhere in the untamed jungles of Manila, Collier enters the all-female jail after her horrible crime. There, sharing the same squalid cell with the equally unfortunate inmates--the tough-as-nails lesbian leader Grear, cynical Alcott, heroin-addict Harrad, and rebellious cellmates Ferina and Bodine--beautiful Collier immediately catches the eye of brutal guard Lucian. But life behind bars is hard, and amid daily humiliation, cat-fights, free sex, and torture, the desperate women concoct a daring escape plan. Will the lethal sextet of prisoners escape from the cage?