The Troubled Summit: Climate Change and the Dangers of Mont Blanc

Perils of the Grand Couloir

Nestled within the imposing ridge of Mont Blanc, Europe's highest peak, the Grand Couloir is a hallowed ground for climbers. However, this narrow passage has become a sinister gauntlet, claiming numerous lives due to incessant rockfalls.

Climate Change's Devastating Impact

Ludovic Ravanel, a renowned geomorphologist and fervent alpinist, reveals the lethal consequences of climate change on Mont Blanc. As glaciers melt and temperatures soar, the mountain's stability is compromised, triggering unprecedented rockfalls and other geological hazards.

"The whole Alps has been hit very hard by the climate crisis, harder than most places in the world," says Ravanel.

Melting Glue: The Role of Permafrost

According to Ravanel, ice serves as the adhesive that binds the towering heights of Mont Blanc together. When this glue vanishes, the mountain crumbles. As temperatures increase, the frozen depths of permafrost begin to thaw, releasing warm water that weakens rocks and triggers frequent avalanches.

The Changing Landscape

Ravanel's studies have identified a staggering 25 geomorphic changes linked to climate change that pose risks to mountaineers. Rockfalls in permafrost-ridden regions escalate dramatically when temperatures climb. Erosion rates on some faces of Mont Blanc have soared to alarming levels, making even seasoned climbers wary.

Alpine Champions: Guides and Geomorphologists

With a deep understanding of the dangers posed by the evolving mountain, Ravanel advocates for collaboration between geomorphologists and mountain guides. He explicates, "I think of it first as a mountaineer, and then as a scientist." This partnership enables guides to mitigate risks by considering recent research findings.

A Troubling Legacy for Future Generations

Ravanel's work is driven by his concern for the future of the Alps and the well-being of his children, who share his passion for mountaineering. He wonders solemnly about the fate of Mont Blanc's glaciers as his kids embark on adulthood.

Melting Memories: Ice as Historical Witness

As a mountaineer, Ravanel's research is inextricably linked to his climbing endeavors. He recently retrieved the oldest ice from Mont Blanc, which holds the story of past climates. Its melting, he says, "means that the mountain had not had as little ice as it does now for more than 6,000 years. That's the climate crisis."