Here's a review of it I just penned ... (doesn't really contain a spoiler).
Six girls in their early twenties go on a caving expedition in a previously unexplored cave. When the entrance to the cave collapses, the girls must try to find another way out. However, it soon appears that they are not alone in the cave.
This movie appealed to me for several reasons. First of all, it really scared me, really bloody scared me, which most horror movies unfortunately don't do. This movie brought to me some pretty vivid images that stuck to my mind for hours after watching this, AND made me hide under a blanket on my sofa!!
Secondly, the movie went straight to the chase. As movie watchers, we are often subject to movies moralising over certain questions, as for example religion (boring) and politics (even more boring), even though these issues are not part of the plot of the movie, and this moralisation can sometimes be quite irritating. British-made "The Descent" didn't have any of this. It is clear already from the beginning that the director has one single goal—which is to scare the heck out of you.
Thirdly, I'm very glad that the "hero" in this film isn't the average Hollywood hero who has some kind of weakness that he/she manages to overcome in the end of the film. The characters in "The Descent" are characters you could find in a good novel. None are pure good and none are pure evil. You actually have to use your brains in order to make up your mind what to think of them.
The minus (if I have to say that) with this movie was that the plot was too thin, and even though a horror movie's main goal is to scare people, there should be a good story behind it. Since I all the same was thrilled from beginning to end, I only remove one point from the total score and give it a 9/10.
Good points: the film is low budget (basically) and uses lighting and ambience to help with the terror AND it does that with excellence. I'd HATE to think how such an film would have ended up in the hands of an American director with a big budget. The lighting, for example is basic: caver's helmet lights and flouro sticks, and the odd flame, that's it. Really creepy!!
Special effects: brilliant, but you'll need to see it as any description will give it away.