Mont Blanc from the Aiguille Du Midi above Chamonix, France, with climbers on the Cosmiques Arete.

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 climbr pair mate climbers rest pause exposed exposure adventure mountaineer mountaineering risk