Aerial drone top down shot over a dam under construction in Grimsel Pass, Swiss Mountain, Switzerland on a sunny day

aerial drone shot top down dam dam under construction under construction cranes constructing grimsel pass swiss mountain switzerland sunny day daytime hospiz hotel grimselsee grimselsee hotel valley mountain day alps bernese europe furkapass grimsel grimselpass hotel grimsel hydroelectric landscape mountain pass nature outdoors panorama pass reservoir rocky slope scenic slope swiss technology tourism tourist destination vacation water red cranes sunlight construction site birds eye view overview