This is from Columbia of all places who are not really known for their film output but what a great little film. Shot on a shoestring budget on location on top of a mountain, it oozes menace and atmosphere.
A group of soldiers have to secure a military outpost but find it deserted with evidence of mass slaughter there but only have a woman bricked behind a false wall guarded by superstitious paraphernalia as the only witness to what went on and she isn't talking.
Refreshingly free of clichéd dialogue and exposition, it is a superbly shot film and has more in common with the film Session 9 than traditional Horror. No stupid shocks, twists or excessive gore to drive the film forward, it instead relies on acting chops and atmosphere as the soldiers slowly disintegrate into internal madness and desperation.
The film doesn't provide any definitive answers as to what went on and is all the more rewarding for it. Proof again that throwing money at a film doesn't always produce the goods.