"Cannibal Holocaust" is a 1980 Italian horror film directed by Ruggero Deodato. The film is set in the Amazon rainforest and follows a documentary crew that goes missing while filming a project on the local cannibal tribes. The crew consists of four men and one woman. The film is presented in a found-footage style, suggesting that the crew filmed their own deaths.

LK21 might not be a real version. While I couldn't find any reliable information on LK21, this does not confirm if the alternate cut exists or not.

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Robert Kerman, Francesca Ciardi, Carl Gabriel Yorke, and Luca Barbareschi.