AllMovie

In the depths of the lush, steamy Amazon jungle, rife with exotic life forms, a group of adventurers embarks on a quest to discover a legendary river reportedly filled with diamonds "the size of your eyes" as well as precious jewels and gold, and in the process finds itself enveloped in incomprehensible barbarism. At the mercy of this mysterious jungle labyrinth, the treasure hunters are forced into fierce battles with determined cannibals, ruthless headhunters, ferocious alligators, piranhas, a tribe of topless female warriors, and, equally disturbing - the greed of their own colleagues, raising the question "Which is more treacherous - the greed of man or the perils of the jungle?" Created by one of Mexico's most famous exploitation and action/adventure film directors, René Cardona, Jr., this film has been labeled "One of the best Indiana Jones style films seen".