There are few people in this world capable of riding lines like these, and snowboarder Xavier de le Rue and skier Samual Anthamatten are among the elite. The trailer for “Swatch Degrees North by The North Face” gives an inside look at these mountaineers and their battle with Svalbard and “The Dirty Glacier.” It’s amazing the situations these guys will put themselves into, but when you see the lines they get to ride, it all starts to makes sense.