The copy that I borrowed from a friend is titled "Amazonas". I have been a friend of all the Italian gore films, so that is why I checked it out. It has adventure, sex, and gore. It sort of reminded me of Emanuelle and the Last Cannibals in that it goes a little farther in the sex scenes then your average adventure movie. The copy I have is the uncut unrated version. So if there is a rated R version, I can imagine it just wouldn't have the same edge that the unrated version has.
Review of Massacre in Dinosaur Valley
