Women in Cages (1971)

Carol Jeffries (known as 'Jeff') is a naive American woman staying in the Phillipines. She is given ten years in prison after being set up by her drug-dealer boyfriend, Rudy. She endures the harsh conditions, sadistic head matron and attempts on her life, then convinces her cell-mates to try to escape with her through the jungle, in spite of the knowledge that ruthless trackers will be sent out after them.