Login with Facebook
Aiguille du Midi
Routes Sorted
L to R R to L Alpha
Cosmiques ArÍte 
Rebuffat (Southeast Face) T 

Cosmiques ArÍte 

YDS: 5.6 French: 4c Ewbanks: 14 UIAA: V ZA: 12 British: S 4b AI2 M4 Mod. Snow

Type:  Mixed, Ice, Snow, Alpine, 8 pitches, 1000', Grade II
Consensus:  YDS: 5.6 French: 4c Ewbanks: 14 UIAA: V ZA: 12 British: S 4b AI2 M4 [details]
Page Views: 1,096
Submitted By: Dan Flynn on Mar 4, 2012

You & This Route  |  Other Opinions (12)
Your todo list:
Your stars:
Your rating: -none- [change]
Your ticklist: [add new tick]
Your opinion of this PAGE:    [1 person likes this page.]
On the first rappel


The Classic Climb. AD, Grade II, mostly snow and moderate alpine climbing, with a few sections of strenuous mixed climbing (in winter) or easy rock.

The start up from the Cosmiques laboratory is quite easy, no need to rope up. The beginning of the arete apparently is a slab in summer, but an easy snow slope in winter. From the second peak, two short rappels take you down to the base of the third peak. Easiest route is around to the right, also possible to go straight up it (but need to abseil again).

A short chimney pitch was the crux for us. The guidebook calls it 4c... felt like M5 to me!

Traverse around the corner to the Chamonix side of the ridge, and don't get distracted by the gully with the small roof.. instead head further to the left for the last, brilliant pitch of mixed snow and ice climbing. Really a blast!

Finish on a shoulder in view of the platform of the cable car station. Walk over and up the metal stairs to top out on the platform, doing your best to ignore the cameras (why yes, I am a famous alpinist...).


From the cable car station, walk down the steep ridge (put on your crampons, you have them!), and turn down the easy slope towards the Refuge de Cosmiques. Hike up the slope towards the abandoned Cosmiques laboratory, and follow the obvious line up the arete.

Since the finish is on the cable car station, it makes a popular round trip!


In winter, we used about 3 short screws and a bunch of cams and nuts. There are a few ancient pitons to clip as well. A single 60m rope is fine, and 50m would probably work.

Photos of Cosmiques ArÍte Slideshow Add Photo
In the middle somewhere
In the middle somewhere
Enjoying the view! With Triangle du Tacul and Mont...
Enjoying the view! With Triangle du Tacul and Mont...

Comments on Cosmiques ArÍte Add Comment
Show which comments
- none yet -
Beyond the Guidebook:
The Definitive Climbing Resource
Inspiration & Motivation
to Fuel Your Run
Next Generation Mountain
Bike Trail Maps
Backcountry, Sidecountry
and Secret Stashes
Better Data. Better Tools.
Better Hikes!