Climbers on the arete leading up from the Vallee Blanche to the Aiguille Du Midi above Chamonix, France.

chamonix france alps french alps mountain summit aiguille du midi cable car station cloud mist mont blanc glacier crevasse glacial retreat bossons glacier climate change serac global warming receding retreating snow snow pack slope steep permafrost permafrost melt cloudy misty fog foggy water vapour view view point vista cosmiques cosmiques arete granite rock climber pair mate climbers rest pause exposed exposure adventure mountaineer mountaineering risk tunnel mer du glace vallee blanche sign yellow danger warning ascend rope ice axe shadow exposed exposure climbing rope roped up