Blooper

No one can be seen pushing Jonathan of the cliff when he falls down in the river. Taking into account the way it was shown he was pushed in previous shot, killer should be visible.

When the group is passing a rope bridge, Jonathan's bag swaps positions between two continuous shots.

Obvious discontinuity when Jonathan tells Ty to calm down. Constance's position is changed.

Dust is shown when the group continues with their trip, but when Ty runs after them, there is no dust.

At the start of the film, the red truck slides down a hill in an attempt to hit the drunk wino which results in a fire. Later in the film, the wino meets with the ranger. No mention of a forest fire?.

The long shot of Jonathan, Megan and Daniel crossing the rope bridge is preformed with stunt people. Their size and hair is noticeably not the same as the actors.

When Daniel's body falls in the old cemetery it strikes one of the tombstones which "bounces" upon being hit, thus revealing it isn't really stone.

Part where Constance runs from killer, it's obvious shots were taken at different parts of day.

When the group is coming to their destination, it's shown shown they are going downhill, but when you look at the sides of the van while they are driving, it appears they are driving on flat terrain.

You can see Jonathan breathing after being dead.

At 50:19, When Daniel approaches the cemetery to take pictures a boom mic is visible for a few seconds in the top left of the screen before it is realized and then pulled out of the frame.