By Olivia Le Poidevin and Dave Graham, Reuters
The landslide covered the southwestern village of Blatten. Photo: X/SuisseAlert
A huge chunk of a glacier in the Swiss Alps broke off on Wednesday, causing a deluge of ice, mud and rock that buried most of a mountain village that had been evacuated due to the risk of a rockslide, authorities say.
One person is currently missing, officials said.
Drone footage broadcast by Swiss national broadcaster SRF showed a vast plain of mud and soil completely covering part of the southwestern village of Blatten, the river running through it and the wooded sides of the surrounding valley.
"We've lost our village," mayor of Blatten Matthias Bellwald told a press conference after the slide.
"The village is under rubble. We will rebuild."
An official in the canton of Valais where Blatten is located, Stephane Ganzer, told Swiss media about 90 percent of the village was covered by the landslide.
"An unbelievable amount of material thundered down into the valley," spokesperson for local authorities Matthias Ebener said.
One person was missing, Ebener said. Officials gave no further details on the person during the press conference.
Officials said millions of cubic metres of rock and soil had tumbled down since Blatten was first evacuated this month when part of the mountain behind the glacier began to crumble, sparking warnings it could bring the ice mass down with it.
A video shared widely on social media showed the dramatic moment when the glacier partially collapsed, creating a huge cloud that covered part of the mountain as rock and debris came cascading down towards the village.
EN IMAGES - Voici l’effondrement du glacier Birch sur le village de Blatten (VS), dans le Lötschental. Il ne reste pratiquement plus rien du village. (RTS) pic.twitter.com/sOZGgKsEGs
— SuisseAlert (@SuisseAlert) May 28, 2025
Experts consulted by Reuters said it was difficult to assess the extent to which rising temperatures spurred by climate change had triggered the collapse because of the role the crumbling mountainside had played.
Professor of environment and climate at the University of Zurich Christian Huggel said while various factors were at play in Blatten, it was known that local permafrost had been affected by warmer temperatures in the Alps.
The loss of permafrost can negatively affect the stability of the mountain rock which was why climate change had likely played a part in the deluge, Huggel said.
The extent of the damage to Blatten had no precedent in the Swiss Alps in the current or previous century, he added.
The rubble of shattered wooden buildings could be seen on the flanks of the huge mass of earth in the drone footage.
Buildings and infrastructure in Blatten, whose roughly 300 inhabitants were evacuated on May 19 after geologists identified the risk of an imminent avalanche of rock and ice from above, were battered by the rockslide, officials said.
SRF said houses were destroyed in the village nestled in the Loetschental valley in southern Switzerland.
Swiss President Karin Keller-Sutter expressed her solidarity with the local population as emergency services warned people the area was hazardous and urged them to stay away, closing off the main road into the valley.
"It's terrible to lose your home," Keller-Sutter said on X.
- Reuters
