Thilling and moving film concerning an unstoppable chase to find a valuable treasure , while battling for survival with threes groups besieged by head-cutters Indians , greedy gunrunners , including gore and blood . Exciting adventure and exploitation movie with three groups of adventurers all vying to find a treasure in the jungle where they clash against each other , take off the relentless natives , as well as the perilous wildlife . The best scenes are the immense efforts of the mean groups have to carry out for their purports , forced to do anything and everything they could to stay alive . Their Greed & Lust for Diamonds Was More Deadly Than the Perils of the Jungle. They survived the impossible...by doing the unthinkable. It's "Man against Man" and "Man against Nature" - Which One Will Prove More Deadlly ?
In the film there are noisy adventures , action pace , impressive struggles , beautiful landscapes and lots of blood and gore . An adventure movie relying heavily on sensationalistic aspects , eerie images full of gore , nudism and exploitation , such as physical violence , tortures , merciless natives executing decapitation and many other things . Regarding corrupt and ambitious people who will have to confront lots of risks until find a treasure and all of them will take on villains , savage Jibaro tribes and fighting each other . From start to finish the action-packed is non-stop and gory paranoia reaches a fevered pitch that culminates in a final savage action . The flick features many strong scenes , among them beheading , astonishing slaughter , cannibalism , a gloomy spectacle to watch . It's fast moving and that's why it is neither tiring, not boring , but bemusing . Special effects are passable , but other parts of the movie are never fully realized . The movie pushes too hard and too far , and no apt for squeamish . It strives for being some inspirational but falls well short of being really inspired and marred by some extreme exploitation scenes . In spite of it , the movie is entertaining , though shot in fits and starts and in Mexico obtained success enough . It was shot on location in Chiapas, Mexico and studios : Churubusco Azteca, Mexico City, Distrito Federal, Mexico , and Tuxtla Gutierrez, Chiapas, Mexico . Being a Mexican/American co-production , here appear notorious American actors as Stuart Whitman , Donald Pleasence , Bradford Dillman, John Ireland and Mexicans as Emilio Fernández , Sonia Infante , Pedro Armendáriz Jr. , Jorge Luke , Hugo Stiglitz , all of them giving ordinary performances , but they were so fun and amusing that kept entertainment in the film.
This horrific retelling of the treasure hunt throughout Amazon jungle was regularly written/produced/directed by Rene Cardona Jr who developed a long career as national as international . He was a Mexican director and writer, expert on all kinds of genres with a penchant for Terror , adventure and exploitation ; being especially known for The Treasure of the Amazon (1985) , The Bermudas Triangle (1978) , ¡Tintorera! (1977) , Cycone , Fantastic Balloon Voyage , Under Siege , The Night of a Thousand Cats , Survivors of Andes , Beaks , Carlos the terrorist and Guayana, El Crimen del Siglo (1979) . Rating : 5/10 , average but passable and acceptable.
