Timelapse video at end of night shows clear skies, thousands of stars and milky way, first rather calm situation but as the end of the night arrives more and more airplanes fly across the skies and also many many satellites criss-crossing the heavens... at 41 seconds timeline a very bright satellite rises from near center to the upper right, that is actually ISS the International Space Station. Also interesting is to see the airplanes leaving long condensation trails - contrails - as the upper atmosphere is loaded with moisture. Filmed in southwestern Switzerland in Valais canton. The mountain at bottom is Haut-de-Cry mountain, almost 3000m elevation.
filmed in timelapse mode with Canon EOS 80D and Sigma 20mm f/1.4 .
Sound added edited.