When the team are around 20,000 feet and complaining about the lack of oxygen, one of the characters says: "Welcome to the death zone." In fact, the death zone refers to the altitude at which there is insufficient oxygen properly to sustain life and this is generally accepted to be above 8,000m or around 26,000 feet.
British Columbia is spelled wrong throughout the credits ("British Colombia").
When the team arrive at the base camp, Taylor claims they are at around 20,000 feet. K2 base camp is at an elevation of only 5,400m or 17,700 feet, nowhere near the death zone. The same goes for every base camp on every 8,000er. It would be pointless to put the base camp into the death zone. The death zone begins at about 8,000 meters and it is a grueling climb to even get that far. The whole point of the base camp and the lower camps is to have safe locations to rest, where nobody is slowly dying from oxygen starvation just by staying there.