One of the few genres not to owe anything to Hollywood. Cannibal films were the rage in Italy during the late 70's and early 80's, and all pretty much had the same plot and same conclusion. All you needed was a jungle setting, plenty of natives, a few silly explorers and enough guts and gore to make a billy goat puke. Most infamous of these films would be Ruggero Deodato's Cannibal Holocaust and Umberto Lenzi's equally vile Cannibal Ferox. There would be a few non-jungle related cannibal movies, but none of them lived up to the glory or nasty reputation of their Italian cousins.
