The Descent is an enjoyable horror movie about a group of friends who go cave diving in the Appalachian Mountains only to wind up trapped underground and hunted by bloodthirsty humanoid creatures.
Compared to most recent horror films, this one's excellent. The setting is creepy and claustrophobic, the acting is above-par, and the tension builds at a steady pace. Since this is a creature feature, it walks a fine line between horror and camp. This movie does cross that line and degenerate into camp on more than one occasion. Once these girls turn Rambo and start killing the cave creatures, it becomes an over the top gore fest. And each subsequent victim of the cave creatures suffers a more bloody and undignified death. But the camp factor doesn't make it any less scary or creepy.
The set design is amazing and I didn't realize how awesome it was until I saw the special features and making of doc, which is quite funny. Most of the guys who play the cave creatures are sinewy and hairless, so it's fun to watch them clown around in their monster make up in the making of doc. It's also fun to see a bunch of tough athletic chicks do some bad ass cave diving and then fight as best they can to survive once the shit hits the fan. Overall, it's worth a rental on a night when you want to be creeped out and boo!'d.