The demon's bug-eyes were created with ping-pong balls that had tiny holes poked in them to allow the actor to see.
This movie is often confused with Jesús Franco's similar movie from the same year, White Cannibal Queen (1980).
No sets were built for this film.
The film was briefly available in the UK as a pre-cert (and now very rare) video before being banned and placed on the DPP list of official video nasties. It was finally passed fully uncut in 2008.