Continuity mistake: After they find Rebecca's body, Rios asks Sarah if she can remember anything. She replies with "We shouldn't stay here." Between these shots, the thickness of the dirt on the right side of Sarah's mouth/cheek changes. (00:27:15)
Continuity mistake: After Sarah and Rios come out from the flooded cave, their clothes are bone dry even though there were almost fully submerged underwater. (01:01:25)
Continuity mistake: When Vaines takes out his gun whilst using the camcorder's night vision mode, the condition of his thumbnail in the close-up shot of him taking out his gun looks completely different to how it is in the close-up shots of him holding the camcorder. In the gun shot it looks dirty and unkempt but looks clean and pristine in the camcorder shots.
Continuity mistake: In the scene where Sarah and Ellen are attacked in the pool of poo, Ellen stabs one of the creatures in the neck with a hair pin. Sarah ends up with blood all over her face, her neck and her (white) jacket, moments later there is hardly any blood on her, which later reappears.
