Can__APOS__t say too much without giving crucial elements away. Just saw this at a screening in Boston and thought it was one of the more clever independent films I__APOS__ve seen in the past two years. Any cinema buffs, sci-fi fans, or documentary-lovers would find this a very inventive, well-executed, and highly entertaining piece. It seems like it would be unforgivable of any fan of Werner Herzog__APOS__s to not see this film. You don__APOS__t need to be a fan of his films to thoroughly enjoy this doc though. I have never seen one of his films before, but I went right out and rented two of them after seeing this film. Great cinematography, fantastic drama, some laughs, and some pretty terrifying footage that you won__APOS__t believe you just saw!

　　一所英国寄宿学校附近的水力压裂地出现了一个神秘陷坑，被释放出的恐怖力量令整个学校变成了一个血腥的杀戮战场。