The Matterhorn is one of the most famous and best marketed mountains of the Alps. A good place to see it is usually the Gornergrat summit, 3135 masl, reachable by Europe’s highest open-air railway (and second highest railway in Europe after the Jungfrau). The Matterhorn is usually the star and steals all the other mountains in the area the show. But what if it hides behind a wall of clouds?