The cave where Guna hides Roshini aka Abirami is situated in between three naturally arranged imposing boulders. Due to this fact, from outside, when fog passes the cave, rises and comes out of the chimney-like opening, it appears as though a devil is cooking. For this mere reason, it was originally called as the Devil's Kitchen. Since the movie's release this almost untrespassed location, gathered popularity and has been rechristened to Guna Cave. It is currently a tourist attraction in Kodaikanal, Tamilnadu.
The single shot in the beginning of the film where Guna runs in circle while narrating a disoriented story to the doctor attained legendary status in Tamil film history. Kamal Haasan's monologue, going through different emotional states while gradually picking up pace in the movement, is still a popular choice among aspiring actors during auditions.
Kamal Haasan revealed that the lengthy tracking shots in the beginning portions of the film were done as a tribute to Max Ophüls, a German-french director.
The caves which the film was shot in were earlier called Devil's Kitchen, Kodaikanal. The location became a tourist spot after the film's release and it later became known as "Guna Caves". It was here that the song "Kanmani Anbodu" was shot. Sathy who worked as Production controller for the film revealed that "the cave was about 500 to 600 deep , they tied ropes with pulleys and transferred all the production equipment's in and out of the 500 feet cave".
The film was first titled as Mathikettan Solai, but was later re titled as Gunaa.