In reply to GridNorth:
> (In reply to PMG) ... the girlfriend spends the night out on the face in a dress and overcoat as TK dies ... .
I agree. The final sequence is pointless. It somehow diminishes the tragedy of TK: left alone, surviving the night and finally not making it. It also detracts form realism of the earlier mountaineering scenes. And it is this realism which makes the film work.
Paradoxically, special effects and superhuman heroes do not result in a really gripping drama. They are simply unconvincing, also at the subconscious, emotional level.