Continuity mistake: In the opening scene of the film when we see the male climber almost reaching the top of the cliff. If you look on the side of the cliff, there is some kind of metal device/climbing equipment. This object moves between shots from being about two feet away to the right from the male climbers hand, to a few inches when the climber reaches for his last grip on the rockface. (00:01:05)
Continuity mistake: When Rich and Hailey are rock climbing, Rich reaches the top and is then killed and blood drops onto Hailey's face. It is in droplets, then Hailey wipes it, so it smears across her face, then it changes to a droplets again, then to smears, and the location, shape and size of the drop/smears differs too. (00:02:10)
Continuity mistake: At the beginning of the film when we see Chris waiting in traffic, in one shot you can see his hand on the steering wheel. In the following shot it's not. (00:06:25)
Continuity mistake: Chris walks up to one of the drivers of the truck to ask what's going on, and when the driver speaks to Chris, the distance between the driver's head and his arm, changes between shots. (00:06:50)
Continuity mistake: At the beginning of the film when Chris is on the phone in his car, he loses the signal; watch his hand on the phone, it changes between shots. (00:07:55)
Continuity mistake: At the beginning when we see Chris at the gas station, in one of the shots the man sitting in the chair puts his drink to his mouth, yet in the following shot we see him getting to his feet. (00:09:30)
Continuity mistake: When Chris is driving towards the shortcut, in one shot Chris is driving towards an opening in the bushes and trees, yet in the following shot, if you look out the windows it's back to bushes and trees, with no openings. (00:10:25)
Continuity mistake: Near the beginning, just after Chris has turned onto the shortcut, in one shot he has his arm outside the car but in the following shot it's inside. (00:10:55)
Continuity mistake: Close to the beginning after Chris crashes into the 4x4, he gets out of the car, and says sorry, and puts his left hand up, but in the following shot he has his right hand up, then back to his left. (00:11:45)
Continuity mistake: Near the beginning, when Francine and Evan are smoking while sitting on the car, the shots from the side show Francine with one leg bent and one stretched, while those from in front show both legs bent. (00:14:00)
Continuity mistake: Close to the beginning when the guy and girl stay behind at the 4x4, in one shot you can see that the girl has both legs up, in the following shot one is up. (00:15:05)
Continuity mistake: When Francine gets out of Chris's car, and starts shouting "Evan", between shots she brings her arm down to her side twice. (00:18:20)
Continuity mistake: Chris and Jesse, and Carly and Scott are walking along and Chris is trying to get a signal on his phone. Then when the shots changes, Jesse and Chris have swapped sides. (00:18:40)
Continuity mistake: When Jessie and Chris are standing by the crash barrier at the edge of a cliff, Scott, with Carly on his back comes running down to the crash barrier. Between shots they reach the crash barrier twice, and Scott steps off a step twice too. (00:21:25)
Continuity mistake: Near the beginning of the film when we see Jessie and Chris standing by the dead end sign, Jessie is standing on the left and Chris on the right. When the shot changes to the side you can see Jessie is now on the right. (00:21:25)
Continuity mistake: When Chris Jessie Carly and Scott are at the Dead End Sign, if you watch Chris, he is looking at Carly and Scott, then looking away then back to looking at Carly and Scott all in continuous shots. (00:21:35)
Continuity mistake: When Chris, Jessie, Carly and Scott reach the house, the camera is behind them and Jessie is on Chris's left side, yet from the front Jessie is on Chris's right side. (00:22:55)
Continuity mistake: In the scene where Carly, Scott, Chris and Jessie are approaching the house in the woods, the shot from the back shows Jessie crossing her arms and leaving them there, and Scott behind Carly, but a shot from the front shows Jessie's arms down by her side, and Scott holding Carly. (00:23:00)
Continuity mistake: When Chris and the others are talking outside the house in the woods, Scott starts talking about West Virginia or something, and in one shot he raises his right hand to his head, and in the following shot he has his left hand to his head. (00:23:50)
Continuity mistake: Chris Jessie Carly and Scott get to the house in the woods. Just before Chris enters the house, he is holding the bag in his right hand then when he opens the door the bag is now in his left hand. (00:23:55)
Answer: Just fiction. Based, if anything, on mere urban legend.
Phixius ★