We may compare this with extreme alpine conditions: on a spot above the Aletsch glacier at a height of 10,700 ft.
Yet it is a curious fact that the three longest glaciers in the Alps (the Great Aletsch, 162 m., and the Unteraar and the Fiescher, each 10 m.) are all in the Bernese Oberland.
The lake of Thun, and those in the Upper Engadine, in the heart of the mountains, though these are naturally smaller in extent, while the true lakes of the High Alps are represented by the glacier lakes of the Marjelensee (near the Great Aletsch glacier) and those on the northern slope of the Col de Fenetre, between Aosta and the Val de Bagnes.
Griinhornlucke (Great Aletsch Glacier to the Fiescher Glacier), snow.
As the river rolls on, it is swollen by mountain torrents, descending from the glaciers on either side of its bed - so by the Geren (left), near Oberwald, by the Eginen (left), near Ulrichen, by the Fiesch (right), at Fiesch, by the Binna (left), near Grengiols, by the Massa (right), flowing from the great Aletsch glaciers, above Brieg.