I have just watched this for the first time, I started watching thinking oh no, another Cannibal Holocaust wannabe, with it's VERY similar music and opening titles.
Fortunatly the whole central section of the movie is totally different, apart from the obvious facts of being set in the Amazon.
It's actually quite a well written (for the genre) tale of a girl who is dragged into the Amazon and lives with a tried there.
There is a lot of nudity but for the more part it doesn't feel gratuitous but rather just what you would expect.
There is some blood and some sexual situations but mostly not 'too' exploitationary.
On the whole this is a film I think I'd like to watch again, although it's not without it's faults which include the dubbing and some VERY gratuitous animal stock footage.
There are some interesting twists and turns in the movie too which makes a change, and no HUGE leaps of logic plot-wise. It also makes a far better point about western man being the real cannibals, far better than Cannibal Holocaust.
6/10