Swiss Alps in recent hours has happened a rare and frightening: a piece of the glacier of the Wetterhorn, at almost 3,700 meters above sea level, was split probably because of great heat and caused an enormous avalanche valley of Grindelwald in Switzerland, near the border with Piedmont. The images were gathered by two hikers Swiss, Hans Buhler and his wife Marianne, who told that he “heard a roar: we thought in a plane, then we saw the white mass that swooped down. We shoot, then we taken cover ”