Amazon River

The Amazon River is a big-ass river. Seriously... its huge. It runs through South America with various tributaries making up the Amazon basin. It runs through Brazil, Columbia and Peru before discharging into the Atlantic Ocean. The Amazon River is a source of mystery and excitement for many people, and is world renowned for its black lagoons, cannibal pirates, flesh-eating piranhas and giant-ass anacondas. Popular myth would have you believe that nothing good comes from this large water way.

Anaconda
A documentary film crew, led by a director named Terri Flores, hire a boat to take them down the Amazon River so they can research an allegedly lost Indian tribe called the Shirishamas. The don't find any Shirishamas, but what they do find is a giant-ass CGI anaconda snake that attacks the boat and proceeds to swallow its contents faster than a Jersey hooker.

Cannibal Ferox
A trio of activist college students journey to the Amazon in an effort to disprove the existance of cannibal tribes. Not only do they discover that cannibals do in fact exist in South America, but one of their number, Mike Logan, also discovers that stepping into piranha-infested waters is just as painful a way to die as being eaten by hungry natives.

Creature from the Black Lagoon
More or less the same type of foibles as those unfortunate shmucks from Anaconda. Only this time, it is a scientific research team headed up by Doctor Carl Maia who brings his macho scientists and comely Kay Lawrence down the river aboard a boat called The Rita, captained by a local named Lucas. No big snakes this time, but to compensate, they find they instead find themselves attacked by a bipedal gill-man left over from the Devonian Age.

Green Inferno, The
A group of student activists travels to the Amazon to save the rain forest and soon discover that they are not alone, and that no good deed goes unpunished.

Rundown, The
The Rock is hired to travel to South America to save a putz named Travis, who is a self-styled treasure hunter the son of an American mob boss. Most of the action takes place on land however.