Pair it with some Penderecki if you're feeling sinister, or something from Scott Walker's Tilt. For me, this is the kind of thing von Trier tried to do with Antichrist, but failed miserably. A 'horror film' where the anxiety and uncertainty is created by a pervasive feeling of unease, suggested, not by violence or provocation, but by the natural light and shadows of the forest obscured by the dirt between the lens.