The Grenz Glacier flowing down between Monte Rosa and Lyskamm
It's not really visible in this picture, but, coming from the left, the big Gorner Glacier joins the Grenz Glacier, and after the confluence it's called the Gorner Glacier.
On the top left is the Dufourspitze, the high point of Switzerland; the mountain in the middle is Lyskamm.
4 July 2013.