Factual error: The trip takes place in the summertime, and it's in far-northern Sweden (we can see it on the map). And yet the film shows it getting dark every night. In far northern Sweden in the summer, it doesn't get dark at night.
Continuity mistake: After arriving inside the cabin in the woods all characters appear to be dry, after coming in from heavy rain. (00:23:00)
Continuity mistake: After Hutch is buried, Dominic leaves to catch up to the other two, limping with his right knee held rigid. An aerial shot is then taken showing Dom limping on his left leg instead.
