Five of North America's Scariest Ski Runs and Lines

Green, blue, black—for skiers, run difficulty gradings are a second language that makes digesting resort maps quick and easy. Want a mellow groomer? Blue’s probably your best bet. In the mood for a thigh-buster? Head for a black or double black.The Jackson Hole Aerial Tram soars in front of Corbet's Couloir (looker's center-right), and S&S Couloir (looker's center-left)Photo: Courtesy of Jackson Hole Mountain ResortHowever, at a certain point—usually when skiers r