The Landslide Blog is written by Dave Petley, who is widely recognized as a world leader in the study and management of landslides. Over the last 24 hours there have been further developments in the situation on the slopes above Blatten in Switzerland, with attention continuing to focus primarily on the Birch Glacier. Yesterday evening […]
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The 26/27 May 2025 update on the landslide threatening Blatten in Switzerland
Smaller rockfalls have reduced the risk of a major rock slope collapse above Blatten, but attention has shifted to the Birch Glacier, which is now moving at 10 metres per day. The Landslide Blog is written by Dave Petley, who is widely recognised as a world leader in the study and management of landslides. Over […]
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The 21 May 2025 quick clay landslide at Sainte Monique in Quebec, Canada
The Landslide Blog is written by Dave Petley, who is widely recognized as a world leader in the study and management of landslides. On 21 May 2025, a family lost their home to a quick clay landslide in Sainte Monique, to the northeast of Montreal in Quebec, Canada. Radio-Canada Info has posted to Youtube some […]
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The 21 May 2025 update on the landslide threatening Blatten in Switzerland
The Landslide Blog is written by Dave Petley, who is widely recognised as a world leader in the study and management of landslides. News this morning from Blatten in Switzerland is that the landslide on Kleiner Nesthorn has continued to develop. Blue News reports that: “The situation in Blatten in the Valais Lötschental remained tense […]
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The incipient major rock slope failure at Blatten in Switzerland
The Landslide Blog is written by Dave Petley, who is widely recognized as a world leader in the study and management of landslides. In Switzerland, a dramatic rock slope failure is developing above Blatten [46.4128, 7.7987], a village located in Vallais Canton. Blue News is providing regular updates on a dedicated website. The drama started […]
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Geological complexity as a way to understand the distribution of landslides
The Landslide Blog is written by Dave Petley, who is widely recognized as a world leader in the study and management of landslides. Over the course of my career, I have read many papers (and indeed, written a few) that have tried to explain the distribution of landslides based upon combinations of factors that we […]
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Images of the source of the 28 April 2025 landslide / GLOF at Vallunaraju in Peru
The Landslide Blog is written by Dave Petley, who is widely recognized as a world leader in the study and management of landslides. A few days ago I highlighted the severe landslide and GLOF that occurred on the flanks of Vallunaraju in Peru, on 28 April 2025, which caused substantial damage and at least two […]
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Patterns of fatal non-seismic rockfalls in Spain
The Landslide Blog is written by Dave Petley, who is widely recognized as a world leader in the study and management of landslides. A fascinating new paper (Corominas et al. 2025) has just been published in the journal Geoenvironmental Disasters that describes the compilation and analysis of a new dataset on fatal non-seismic rockfalls in […]
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The 28 April 2025 Glacial Outburst Flood (GLOF) / landslide at Vallunaraju in Peru
The Landslide Blog is written by Dave Petley, who is widely recognized as a world leader in the study and management of landslides. On 28 April 2025, a major debris flow travelled down a channel from a major mountain, Vallunaraju, striking the communities lower down the slope. At least 100 houses were destroyed and two […]
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The 25 October 1954 landslide disaster on the Amalfi Coast of Italy
The Landslide Blog is written by Dave Petley, who is widely recognized as a world leader in the study and management of landslides. I have frequently highlighted the growing impact of multiple landslide events triggered by extreme rainfall around the world. Whilst there is little doubt that such events are becoming more common, they have […]