Aerial flyover over the ice and crevasses of Rhone glacier near Furka mountain pass at the border of Valais and Uri in Switzerland with a pan down to the glacial lake and icebergs

glacier glaciers crevasses glacial moraine crevasse furkapass valais alps ice environment climate mountains swiss alps mountain landscape climate change swiss suisse frozen icy alpine furka rhone aerial uri switzerland melt cold belvedere melting hike 4k hiking europe nature flyover lake travel drone adventure tourism outdoors overhead pass shadows sunny summer autumn