It begins on the tips of Oren (3525 m) and flows north through a corridor bordered by the Little Mount Collon (3,556 m) and Bishop (3716 m) west, and Mont Collon in the east.

It is connected to the west by the glacial Otemma Chermotane Pass (3050 m), a wide passage covered with ice.

On the west side of Mount Collon, the glacier undergoes a vertical drop of 600 meters with a slope of 60%.

The part that follows this steep descent is called "Bas Arolla glacier."

It continues for about 1 kilometer to the north and the ice tongue stops at an altitude of 2160 meters (status 2007).