We're all afraid of what lives deep in the oceans, we're all afraid of what may live out in space, but you really have to respect this film in exploiting the fears of what may live deep in the earths crust. The movie is really scientifically accurate (if you're not a nerd like me though, that probably doesn't matter). I love the design of the monsters, they're like some kind of bat-human hybrid. The movie has plenty of suspense, infuriating moments and character situations, and monster creature screen time, which is what people like me want the most. Definitely recommend!