It is a natural phenomenon that only happens very rarely. If there is no snowfall during the time when the Upper Engadine lakes freeze over, the surface becomes blank ice. It should be pointed out here that stepping on the ice or skating on the lake is always at your own risk.
The picture shows a panoramic view of about 200 degrees from the center of the black frozen Lake Sils.
The dominant mountain in the center of the picture is Piz Lagrev (3164m) on the north side of Lake Sils.
A view over the Lake Silvaplana towards Piz Corvatsch (3303m).
Due to the gradual freezing of the lake, this road made of ice was created across the lake.
