FATMAP difficulty grade
From the Längflue Hut head SSW then S up the Fee glacier, taking the line of least resistance, skirting crevasses as needed.
This is slightly steeper between 3300m and 3550m, then easing off onto the upper section.
Continue approximately S until about 3650m.
Now angle to the R, avoiding the most crevassed ground, then heading NW, aiming for the final glacial slopes at about 3900m.
These are steeper and may be icy and are the steepest part of the route.
The slopes become more gentle as you curve L to arrive on the summit.
Descent is either the reverse of your ascent, or you can traverse the Feechopf and then descend, joining the normal route for the Allalinhorn, to arrive at the Mittel Allalin lift.