Loved the psychological aspects of this movie. What it brought home to me was the idea that hell, true torment, is repetition, the gradual loss of hope, a way out. The characters were in the trail for maybe a week and they all fell apart.
The idea of pride, of asking questions with no right answers or answers anyone would want comes to mind. The male lead, Teddy, wants to investigate the first disappearance and investigates things that are best left alone. As far as the ending goes, it was good for me, as it brought up the idea that all quests, even the bad ones, inevitably lead back to the beginning of the journey. The ending had the kind of idea of all Teddy's sins and stupidity being reflected back at him.
Also liked some of the more...just random elements of this movie. One character is a little behind the others, and then she just goes 90 degrees right and walks straight off a cliff. No sound, no scream, nothing. And the other characters don't even notice. The scarecrow elements referencing the Wizard of Oz were also chilling.
All in all, 8 out of 10.