Goofs

At the very beginning of the film during the television exclusive on the missing film crew, the group is near a seaplane, introducing their guide. Mark is to the far right, doing maintenance on his camera, which is shut off. When Professor Monroe views the team's film reels, one reel shows the same scene as shot by Mark on his camera.

Near the beginning of the film, Oliveira is killed by a poison dart. When Professor Monroe flies in, Oliveira is standing behind the lieutenant.

When the cannibals begin to mutilate Jack, his pants are down to his ankles. When they lay him on the ground, his pants are pulled back up.

When the crew first find the impaled native girl, her legs hang down limply. In later shots, her legs are crossed at the ankles.

The snake that bites the jungle guide in his boot is said to be venomous. It is actually a boa constrictor, a non-venomous snake that kills its prey by constriction.

As it would be impossible for a person to lean back far enough without falling backwards, upon closer examination the impalement, probably the image most associated with this film, is not quite true to life. A side view shows the pole entering the body, but it would have to bend in the torso to emerge through the mouth. In reality, if it went straight through, it would actually have come out through the eyes or forehead.

When the Yanomamo guide is given muskrat flesh to eat, he never puts any inside in his mouth. Instead, he opens his mouth a few times near it to give the impression that he is eating.

When a cannibal holds up Faye's severed head, a wig drops off of the fake head, revealing a yellow foam head underneath.

When the cannibals disembowel Jack, the skin-colored plastic trash bags holding in his fake torso and organs are visible.

During the impalement scene, the lower portion of the "stick" is perfectly smooth and straight, while the portion through her mouth is rough and somewhat jagged, like an actual tree limb. The upper part should also exit through the eyes or forehead.

When Faye has a tarantula on her shoulder, she screams and talks at the same time.

When Professor Monroe speaks into his tape recorder at the Yanomamo village, the dubbing is obviously out of sync.

After the "Last Road to Hell" sequence, the female executive tells Professor Monroe that the footage was "all a put-on" and "there was no enemy army approaching." The "Last Road to Hell" sequence is made up of execution footage and of some footage of villagers in Vietnam travelling, with no soldiers acting or enemy army approaching. The script originally called for footage of Vietnamese rebels firing at approaching troops, but execution footage from Nigeria was used instead.

The "muskrat" Miguel kills is actually a coati, which is closely related to the raccoon.

During the Shamatari tribe's attack, the Yanomamo tribe members who come to the rescue are visibly laughing. The same thing happens in the Yacumo village fire scene, in which some of the Yacumo tribe members are visibly laughing when they are running into the hut.