Methane bubbles in the icy surface of Silsersee with snowy peak illuminated by sunset light, Lake Sils, Engadine Valley, canton of Graubunden, Switzerland, Europe

Methane bubbles in the icy surface of Silsersee with snowy peak, Lake Sils, Engadine Valley, Graubunden, Swiss Alps, Switzerland, Europe

Methane bubbles in the icy surface of Silsersee with snowy peak, Lake Sils, Engadine Valley, Graubunden, Swiss Alps, Switzerland, Europe

Silser see, silsersee, , silser, of, swiss, switzerland,graubuenden, engadin

Swiss, switzerland, graubuenden, engadin

Aerial view over the fog and Lake Sils in front of sunrise in autumn, Canton Graubuenden, Switzerland, Europe