reservoir, large dam in the valser valley in the zervreila.zervreila lake ski run from the fanellhorn.mountain landscape

alps beautiful blue clouds glacier graubnden rock range peaks peak outdoor nature mountains mountain landscape scenic ski sky snow summit vals view winter fanellhorn grison swiss switzerland magic mountaineering breathtaking skitour tour slope activity adventure hiking mountaineer trekking sport skier background backcountry extreme touring reservoir lake tree forest