Having recently lost her family in a car accident, Sarah (Shauna MacDonald) is invited to join her female explorer friends on a trip to America to help take her mind off things. Her friend Juno (Natalie Mendoza) is planning an expedition to explore some caves in the North Carolina mountains and being eager to put her troubled past behind her, agrees to go along.
After descending into the depths of the caves, they find themselves in trouble when a sudden rockslide blocks the way out. To make matters worse, it seems that Juno has lead them into an unexplored cave system that nobody else knows of.
Stranded a mile below without daylight and no chance of rescue, the group attempt to find an alternate way out before the torchlight and supplies run out. But as they poke about in the darkness, it soon becomes apparent they're not the first people to explore these caves. Not only this but the cave system is inhabited by a group of bizarre Neanderthal creatures, who have a taste for raw flesh (just when they thought things couldn't POSSIBLY get any worse).
Pursued through the caves and tunnels by the bloodthirsty creatures, their problems are compounded when friendships within the group become strained and they find themselves fighting not only against time and the creatures, but against each other.
Having been impressed with Neil Marshall's previous film Dog Soldiers, I was looking forward to seeing this. Unfortunately, the end result proved to be something of a disappointment. After being subjected to about half an hour of embarrassingly "cringe worthy" girly talk, the film descends (no pun intended) into a complete rip-off of "Alien Terror" (Alien : On Earth), with the rock creatures replaced by the mutants from "Chud". Plus the whole thing just took way to long to get going, and the ending was a total downer (depending on which version you watch).
Perhaps worth the price of a rental, but not a film I would care to own. Don't expect anything new or original here either!