Aerial flyover over the end of Morteratsch glacier in Engadin, Switzerland at dawn with a pan up towards some of the tallest peaks of the Swiss Alps like Piz Bernina, Piz Palu

crevasse ice glacial glacier glaciers environment mountains mountain climbing cold 4k frozen morteratsch moraine morteratschgletscher landscape diavolezza piz palu grissons hike aerial hiking nature graubunden drone alps adventure wanderlust gletscher overhead climate change dawn schweiz altitude europe graubuenden alpine engadin summer flyover swiss suisse st moritz piz bernina swiss alps sunrise bernina switzerland sankt moritz