its about a man who kidnaps people ( I think the plot is about one kidnapped woman, but at the end it turns out that there is more victims ),first tying them to a tree for a while, bringing them food and then burying them alive, leaving just a pipe they can breath through.
I was convinced that the name of the movie is Fallen/Forgotten Angels and that it has Angels on its cover, but now Im not anymore sure.
I think the last scene of the movie shows this place with lot of these pipes.. looks like graveyard.
I just spent 4 hours with my sister and friend searching for it.. but nothing 🙁