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Browse our photos and videos of landslide research and post-landslide investigations.

Images

Snowy mountain with labels showing an active rock fall, rock dust, and collapsed snow bridges
12-12-25 Mt. King George East Glacier Landslides
12-12-25 Mt. King George East Glacier Landslides
12-12-25 Mt. King George East Glacier Landslides

Landslides on the northeast side of Mt. King George with clouds of rock dust in the air caused by ongoing activity. Elevation difference between the peak and the glacier is at least 1700 m. Also note the numerous collapsed snow bridges on the glacier. Photo courtesy of Yukon Geological Survey.

Landslides on the northeast side of Mt. King George with clouds of rock dust in the air caused by ongoing activity. Elevation difference between the peak and the glacier is at least 1700 m. Also note the numerous collapsed snow bridges on the glacier. Photo courtesy of Yukon Geological Survey.

Snowy mountain and valley with label showing the size of the debris lobe as 1800m long
12-12-25 Mt. King George North Snow Avalanches
12-12-25 Mt. King George North Snow Avalanches
12-12-25 Mt. King George North Snow Avalanches

Snow avalanche on the north side of Mt. King George. The debris lobe is 1800 m long and runs up onto the hillside across the valley. Photo courtesy of Yukon Geological Survey. 

Snow avalanche on the north side of Mt. King George. The debris lobe is 1800 m long and runs up onto the hillside across the valley. Photo courtesy of Yukon Geological Survey. 

Snowy mountain with a label showing the size of a debris lobe at the base of the mountain
12-12-25 Mt. King George West Face Landslides
12-12-25 Mt. King George West Face Landslides
12-12-25 Mt. King George West Face Landslides

Landslides on the west side of Mt. King George. The central debris lobe is 500 m wide. Photo courtesy of Yukon Geological Survey.

Snowy mountain peak with labels showing the size of a snow avalanche in the valley as 500mx1500m
12-12-25 McArthur Peak Snow Avalanche
12-12-25 McArthur Peak Snow Avalanche
12-12-25 McArthur Peak Snow Avalanche

 Large snow avalanche in valley east of McArthur Peak. Debris lobe is 1500 m wide. Photo courtesy of Yukon Geological Survey. 

 Large snow avalanche in valley east of McArthur Peak. Debris lobe is 1500 m wide. Photo courtesy of Yukon Geological Survey. 

Snowy valley with label pointing out avalanche debris
12-12-25 McArthur Valley Snow Avalanches
12-12-25 McArthur Valley Snow Avalanches
12-12-25 McArthur Valley Snow Avalanches

Snow avalanches in the valley on the east side of McArthur Peak. Photo courtesy of Yukon Geological Survey.

Snowy mountains with labels showing the size of debris lobes at the base of the mountain
12-12-25 McArthur Peak East Face Landslides & Avalanches
12-12-25 McArthur Peak East Face Landslides & Avalanches
12-12-25 McArthur Peak East Face Landslides & Avalanches

Landslides and avalanches on the east side of McArthur Peak. The left-hand debris lobe is 1100 m wide, and the right-hand debris lobe is 1500 m wide. The elevation difference between the peak and the glacier is approximately 1500 m.  Photo courtesy of Yukon Geological Survey.

Landslides and avalanches on the east side of McArthur Peak. The left-hand debris lobe is 1100 m wide, and the right-hand debris lobe is 1500 m wide. The elevation difference between the peak and the glacier is approximately 1500 m.  Photo courtesy of Yukon Geological Survey.

Videos

mud and trees flowing through a channel mud and trees flowing through a channel
Postfire debris flow in the 2024 Elk Fire burn area
Postfire debris flow in the 2024 Elk Fire burn area

A debris flow recorded by a USGS Landslide Monitoring Station in the 2024 Elk Fire burn area near Dayton, Wyoming. The flow was triggered by intense rainfall during a thunderstorm on the evening of July 15, 2025.

A debris flow recorded by a USGS Landslide Monitoring Station in the 2024 Elk Fire burn area near Dayton, Wyoming. The flow was triggered by intense rainfall during a thunderstorm on the evening of July 15, 2025.

Side view of a rocky peak partially covered in snow Side view of a rocky peak partially covered in snow
Geologic Controls on Deep-Seated Landslides
Geologic Controls on Deep-Seated Landslides

The frequency and scale of landslides in a region are determined by both external forcing and inherent, site-specific susceptibility.

The frequency and scale of landslides in a region are determined by both external forcing and inherent, site-specific susceptibility.

snowcapped mountain peak surrounded by tree-covered hillslopes snowcapped mountain peak surrounded by tree-covered hillslopes
Understanding large rock slides in deglaciated valleys in the Central and Patagonian Andes
Understanding large rock slides in deglaciated valleys in the Central and Patagonian Andes

The effects of deglaciation on the slope stability of glacial valleys have increasing importance in the context of climate change, with a role on the susceptibility to large-volume rock slides or rock avalanches and catastrophic cascading geohazards.

Controls on post-fire debris flows in Oregon

Wildfire often amplifies the likelihood and magnitude of debris flows in steep terrain. In arid climates (e.g. US Mountain West and Southwest), post-fire debris flows typically occur during the first rains following fire, suggesting that rainfall-driven erosion is a strong control on in-channel preconditioning and triggering of these hazards.

Wildfire often amplifies the likelihood and magnitude of debris flows in steep terrain. In arid climates (e.g. US Mountain West and Southwest), post-fire debris flows typically occur during the first rains following fire, suggesting that rainfall-driven erosion is a strong control on in-channel preconditioning and triggering of these hazards.

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