The Big Doll House is a 1971 American women in prison film starring Pam Grier, Judy Brown, Roberta Collins, Brooke Mills, and Pat Woodell. The film follows six female inmates throughout daily life in a gritty, unidentified supra-tropical prison. Later the same year the film Women in Cages featured a similar story and setting, much the same cast, and was shot in the same abandoned prison buildings. A non-sequel follow-up, titled The Big Bird Cage, was released in 1972.
(Summary from Wikipedia)