The film was shot in and around Los Angeles and East Los Angeles and inside the walls of San Quentin State Prison. The main character Miklo is sent to San Quentin, where much of the film 's plot takes place. Several of the then - inmates appear in the film as extras. In addition, several of the prison staff members also appear as others and some facilitated the production of the film by serving as technical advisors. Many members of the staff were given small lines in the film, with the warden giving an extended cameo in a part that is somewhat integral to the plot. In addition, actor Danny Trejo, who appears in the film as Geronimo, had served time in San Quentin before deciding to become an actor.
where was blood in and blood out filmed
Los Angeles and East Los Angeles inside the walls of San Quentin State Prison