This is yet another of those "not" horror movies. I was intrigued by the blurb, based on a myth that Russia had drilled so deep into the earths crust they could hear the screams of the damned from hell. Obviously filmed under a tight budget, the majority of the film features just two actors. And neither of them will win any awards for their performances, not even from the local drama club. I would have to class this as a psychological thriller rather than a horror movie. Nothing much actually happens through out the film, just some cat and mouse between the two main characters. And the ending is a bit of a mess. Not sure how this rates 5.5.