South-west ridge from the Kanderfirn side
This is a documented alpine route on Blüemlisalphorn from the south-western side. It is more serious than the normal route and involves steeper mixed climbing. Snow and ice conditions on the approach slopes can strongly affect difficulty and safety. The ridge itself requires secure movement on exposed terrain. It is a mountaineering route for experienced parties with glacier and alpine-ridge skills. Exact timings and metrics vary by conditions and are not given here.
Route Outline
Approach from the Kanderfirn / south-west side
Gain the south-west ridge from the glacier or snow slopes
Climb the ridge over mixed terrain and steeper sections
Reach the summit of Blüemlisalphorn
Descend by the ascent route or via the normal route if conditions and logistics allow