The Mont Blanc massif is facing a record rockfall year after an exceptionally hot Alpine summer destabilised high-altitude terrain — and scientists warn that some of the largest collapses may still be to come. Around 450 significant rockfalls could be recorded in the Mont Blanc massif during 2026, according to geomorphologist Ludovic Ravanel, research director at France’s National Centre for Scientific Research (CNRS). The figure would comfortab…