Where it was filmed
Filmed in a forest in a creepy forest in Norway near Venu, with the two children being in control of the cameras aswell as playing the part of the explorers, this forest was perfect for the set of the film and rather scarily there have been a few disappearances , the grey area highlighted in the picture below shows the radius of where the real disappearances have happened, and the directors chose to play on this and used the same area for their film, it is roughly 50km's, only one house consumes its ground, exactly the same as in the film, you can go there today and see the exact same house where they filmed the movie , but the crew didnt release its location to keep the mystery alive.