Continuity mistake: When the team is crossing the crevasse on the ladder bridge at the ice fall. For safety, the climbers are tethered from their harnesses to the rope handrails with another short length of rope attached to a carabiner clip on each side. As Josh Brolin is crossing, you can see his tether, which he pushes along in front of his hands as he progresses. However, when the camera cuts to a reverse close-up from below, the tether has suddenly disappeared. When the shot cuts wide again, the safety tether has returned.