Swiss Alps are pictured through the window of a Swiss Air Force Twin Otter aircraft during a land-surveying presentation flight of the Swiss Federal Office of Topography (swisstopo) above Switzerland to present the the new Leica ADS100 Airborne Digital Sensor camera, producing 3D pictures with a 10 cm resolution, in Belp near Bern, Switzerland, May 17, 2017. (Photo by Denis Balibouse/Reuters)
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