A huge volume of rock has tumbled from the popular alpine classic the Arete des Cosmiques (AD 3), or Cosmiques Arête, in the Mont Blanc Massif above Chamonix, with a fair chunk of the area beneath the second abseil disappearing. The recent heatwave has caused instability across the range due to a combination of permafrost loss below 4000m and lack of support from melting glaciers.
Another rockfall occurred in the Cosmiques area on Friday 17th with a 10m long boulder falling to the glacier.
The mountain safety organisation in the Chamonix valley, La Chamoniarde, advised on Facebook: 'Huge stone falls are affecting Cosmiques ridge. The area is under surveillance. The route is extremely inadvisable.'
In other Chamonix news, the Chamonix-Planpraz cable car is out of service today until further notice, due to an anomaly in the pulley system discovered during routine maintenance. The Planpraz-Brevent lift remains open. The Planpraz area remains accessible by footpaths. For up to date information on the status of the lift, check here.