A long exposure picture shows stars over the Matterhorn mountain, from the Riffelberg area, in Zermatt, Switzerland, April 14, 2015 during the 150th years anniversary since the first ascent of the Matterhorn mountain. On July 14, 1865, British climber Edward Whymper reached the peak of the Matterhorn (4,478 meters above sea level) together with his rope team. EPA/JEAN-CHRISTOPHE BOTT