"What is this place?"
"Are we dead?"
The minute I read those lines I thought "LOST"! This is just like LOST.
David finds himself in a strange world. There is a lot of surreal things going on. Things out of place, his dead mother calling to him, an unseen beast in the woods. He doesn't know where he ended up when he went through the hole in the stone wall. Another dimension? Is he dreaming? Is he dead? Did he die when the bomber crashed? He doesn't know. We don't know.
"All of these things are real. You have endured pain here. If you can endure pain, then you can die. You can be killed here, and your own world will be lost to you forever. Never forget that. If you do, you are lost."
At this point the book got a whole lot more interesting to me. Up until then I was still having a hard time getting into the story. A slow start but strong second half made up for it. Not quite LOST, but still interesting and creepy in its own way.