Blooper

Deputy Winston introduces herself and says she's with the Bunyan County Sheriff's Department. Her cruiser is mislabeled with Ackamas County Sheriff markings, however.

For the scene when the deputy arrives at the cabin, they used a Clackamas County Sheriff cruiser with the 'Cl' blacked out to read "Ackamas County." However, the department seal on the door still reads "Clackamas" in full.

(Around the 48 minute mark) Right after Marcy tries to shoot the dog and it runs away, in the wide shot with the two guys in the foreground, you can see a crew member who picks him up at the left side of the little shed.

During the end credits, a scene is shown of a young college girl looking at Karen's Facebook page. As she flips through the photos she see various photos of the trip our protagonists were on. She then is horrified to see photos of the girl's bloodied legs, then a photo of bloodied shredded mouth and a photo of one of the guys bringing down a shovel to he face. Besides the photos being out of order, these "photos" are clearly screenshots from the film itself and were NOT taken by anyone, as they were taken from angles where there were no cameras (other than the ones filming the movie).