A group of former military elites set out to explore an uncharted abyss, not knowing their worst nightmare is waiting for them deep beneath the ground.
主演：弗雷德里克·怀斯曼 , Wayne Diamond , 基思·威廉姆斯·理查兹 , 康纳·马克思 , Gregory Falatek , 基思·普尔森 , David Torres Jr. , Paul Kandarian , 西奥多·布卢科斯 , Stephen Radochia , John R. Smith Jnr , Jeff Saint-Dic
