At left, the words “The Landslide Blog” appear in white over a tan background that gradually becomes transparent to the right, revealing a sheer cliff face with rubble below it.

The 1-2 August 2025 Carne Wall landslide in the Blue Mountains of Australia

The 200,000 cubic metre collapse of a rock pillar has destroyed two extremely challenging climbing routes. At a time when there is a great deal going on in the landslide world, another really interesting event has almost passed me by. Thanks to loyal reader Scott for highlighting another remarkable event. Overnight on 1 – 2 August 2025, a large rock pillar collapsed at Carne Wall in the Blue Mountains of New South Wales in Australia. This has destroyed a series of famously challenging climbing routes. ABC News has a really good article about the landslide – they estimate that the…

Updates from the Alaska Earthquake Center regarding the 10 August 2025 landslide

The location of this major event has now been identified. It was a major rock slope failure that ran out across the South Sawyer Glacier. The Alaska Earthquake Center has now provided a detailed update about the 10 August 2025 landslide that occurred in the area of Tracy Arm. This work has been led by Ezgi Karasözen, one of the Earthquake Center’s research scientists, so the credit must go to them. They have posted a very informative page that describes the seismic detection of the landslide, provides eyewitness accounts of the damage that it caused and outlines how they have…

The devastating 26 to 28 September 2024 rainfall event in Nepal

The most severe rainfall event ever recorded in Nepal impacted about 2.6 million people, causing losses of US$370 million and about 270 lives. Between 26 and 28 September 2024, a devastating late monsoon rainfall event in Nepal triggered hundreds of landslides. In landslide terms, this was the most serious event recorded in Nepal outside of a major earthquake – economic losses are estimated to have been 1% of the country’s GDP and about 270 people were killed or left missing. An initial analysis (Lamichhane et al. 2025 – the paper is behind a paywall, but the link should allow you…

A likely large, tsunamigenic landslide in Tracy Arm inlet, Alaska on 10 August 2025

Seismic data and eye-witness reports of a displacement wave point to a large landslide at 5:30 am. On 10 August 2025, at 5:30 am local time, the Alaska Earthquake Center detected a seismic signal that was almost certainly generated by a landslide. They have posted the record of the seismic signal to Twitter. Their posting…

The 21 July 2025 giant rock avalanche in Wanrong township, Taiwan

On 21 July 2025, a very large rock avalanche occurred in the mountains of Hualien County, Taiwan. Initial measurements suggest that this ran out over about 6 km. On 21 July 2025, an extremely large rock avalanche occurred in the administrative area of Wanrong Township in Hualien Count in Taiwan. This event was detected on…

The possible causes of the Dharali (Tharali) debris flow in Uttarakhand, India

A possible cause of the 5 August 2025 landslide is the failure of a large body of glacial material high in the valley above the village. The imagery that is emerging after the 5 August 2025 debris flow in Dharali (Tharali), in Uttarakhand, northern India make very somber viewing. Melaine Le Roy posted this comparison…

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About Dave

Dave Petley is pictured from midchest up, with a building with tall paned windows in the background.

Dave Petley is the Vice-Chancellor of the University of Hull in the United Kingdom. His blog provides commentary and analysis of landslide events occurring worldwide, including the landslides themselves, latest research, and conferences and meetings.

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Ideas and opinions expressed on this blog do not represent the views of AGU, Eos, or any of their affiliates. They are solely the opinion of the author.