1981 film by Umberto Lenzi
Cannibal Ferox (also known as Make Them Die Slowly in the US and as Woman from Deep River in Australia) is a 1981 Italian cannibal horror film written and directed by Umberto Lenzi, and starring Giovanni Lombardo Radice, Lorraine De Selle, Danilo Mattei, Zora Kerova and Robert Kerman.
Upon release, the film's US distributor claimed it was "the most violent film ever made". Cannibal Ferox was also dubiously claimed to be "banned in 31 countries". The title derives from the Latin ferox, meaning cruel, wild or ferocious.
Plot summary adapted from Wikipedia, licensed under CC BY-SA 4.0.