Throughout the entire movie you never see their breath even though it is cold. [If the air is very dry you don't see the breath. Depending on the saturation of the air you can see breath or not, it is even possible to see the breath in rather warm temperatures if the air is saturated enough.]

When Gabe is climbing alone he zaps the rock with a 'bolt gun' however as he is not using any rope or other climbing gear there is no need. [Professional "free hand" climbers will often place hook on cliffs they climb for other, less experienced climbers. They do work in a national park, with lots of vacationers climbing yearly.]

After the bad guys kill Frank, Hal takes Frank's pocketknife and puts it into his LEFT leg pocket (right above his shoe). Later, towards the end of the fight scene with Craig Fairbrass, he quickly pulls it out of his RIGHT leg pocket! [He actually does take it out of his left leg pocket.] Corrected by manthabeat

I would like someone to explain to me how the sequence with the bridge blowing up works; The two heroes try to emerge from the cave but are foiled as the bad guys blow it up. They swing round a cavern on the rope onto the next face and climb up onto the top. I presume they are still on the same side of the bridge, (otherwise, why cross over the bridge again?). Yet, they then proceed to cross the bridge you see Gabe (Stallone) trigger the explosives on the opposite side, (which we never see planted - only the one for the cave), and race back to the same side. Presumably, they needed to cross the bridge to keep up with the badguys but as the bridge is now destroyed how do they get across? Unless, the other group is going very slowly and an alternative route is not too far away, wouldn't they take too long going this second way and miss the third suitcase? I think there's a mistake there somewhere but could someone work it out for me. [The plan was that bomb would destroy the bridge so that the two heroes would fall to their deaths. They did not expect them to get back to other side of the bridge so fast.]

When the old man is shot while trying to help the girl who is pretending to be hurt, you clearly see he is shot on the right hand side of his chest, but when his friend runs over to him, the bullet wounds are on the left-hand side of his chest. [He's shot many times, but the first bullet does enter his upper left chest.]

During the fight scene with Sly and the black man in the cave, Sly grabs the guy and is about to impale him onto a hanging icicle. Watch carefully, they show you the icicle before he is impaled, and it is ALREADY bloody and dripping. [It's a stalactite, not an icicle. Also, it is formed of an orange-red rock, so looks like it's bloody when it's not. It is dripping, but so are all of the stalactites in the cavern due to melting snow/ice.]

If you look closely when the girl first grooms the horse it is on the same side of the fence as her. She then walks directly towards the house, (with no other fences visible). When she returns to finish grooming the horse is now on the opposite side of the fence. This means that the horse has either managed to hop over the fence during the dialogue or it is a different horse. Yet when the camera pulls back at the end of the scene you only see one lightly coloured horse, with a second (black or brown) one is just visible on the right of the screen, (for the widescreen DVD anyway). So where did this third one come from? [There are 3 horses in the pen, 2 brown and one black. She unties the one, then walks off. Gabe follows her, and we see him walk through and close a gate (they have now left the pen). Behind her, as she is talking/walking, we see two other horses, one brown one black, both tied to the fence. The easiest way to see the difference between the 2 brown is that one has a brown face, one has a white face.]

Early on when Sly comes back to talk his girlfriend, she is grooming a horse - she unties it and walks off, as we come back again the horse has tied itself back to the fence. [There are two brown horses in the pen. She unties one of them, then leaves the pen and comes back with food which she feeds to the other one, the one still tied up.]

In the beginning when Sylvester loses grip of the woman's hand, she falls to her death. Immediately after that they show the reaction of the helicopter pilot...and he's laughing. [He's grimacing and shaking his head "no", not laughing.]

Not only does Stallone wear just a t-shirt and baseball cap several miles above sea level, but he is sweating profusely throughout the movie. [A common misconception is that snow and ice areas are always cold. (Most of the time, yes, but glacial travel can be oven hot.). The contributer of the 'mistake' has obviously never climbed. Dangling several hundred feet above the ground on rock or ice tools makes you sweat. It's hard energetic work and the adrenalin rush doesn't half induce a bead of perspiration..]