Another cannibal flick from Umberto Lenzi, this one is pretty bad. The only interesting thing is the extrodinary (authentic) footage of various jungle animals attacking and/or killing each other. The plot concerns an expedition going deep into the jungle (again) to find a missing sister. They come across a cult led by Ivan Rassimov, and they also encounter cannibals (although I can't remember how they fit into the story). As for the gore, it's pretty graphic, but it's also poorly-done and unpleasent. Most of the atrocities are actually kinda boring, especially for those who have seen Lenzi's superior cannibal classic Make Them Die Slowly. The sexually-sadistic scenes in that film were taken to absurd extremes; here they're badly filmed and drawn-out too long.The film looks and feels like it was thrown together in a few weeks. It may be of interest to bad-movie buffs, but even hardcore horror fans will be disappointed if expecting a quality production. One of Lenzi's worst.