At the end of The Descent there was only one (nope I didn't think there was either...but apparently there was), and when she emerges from the cave system she discovers that the law is un-convinced of her story and promptly punts our heroine back down the hole with a bunch of cave rescuers and police. The Descent 2, as you might suspect from the lazy arse title, is not as good as the first but as a pacey, daft, action, horror it still works pretty well.