In reply to colina:
Cliffhanger is one of the best five action movies ever made if you can get over the technical inaccuracies. It has a good plot and good characters and is excellently shot with some exemplary set-pieces.
The dialogue is lacking at times, in fairness e.g.
Qualen: I have to admit, Walker, you're a real piece of work.
Gabe: Yeah? Well, I have to admit, you're....a real piece of shit!
Ooh what a clever and cutting comeback!