Aerial flyover over the glacial lake of Rhone Glacier at Furkapass, Switzerland at the beginning of summer with big ice chunks and icebergs in the water

gletscher glaciers glacier glacial crevasses crevasse furkapass moraine ice suisse environment swiss climate change swiss alps frozen wallis alps iceberg mountain valais mountains landscape schweiz switzerland aerial cold furka belvedere melting uri nature melt hike rhone drone alpine wanderlust hiking flyover overhead adventure climbing 4k hiker europe summer spring dusk