Landslides, Rockfalls, Mudflows, Debris Flows

Yosemite Rockfall Photos A photo sequence of a rockfall and debris avalanche by Herb Dunn.

Landslides A USGS fact sheet about landslides and events that trigger them.

Largest Landslides Heart Mountain and Storegga - Earth*s largest known landslides.

Homeowners Insurance and Landslides Most policies do not cover landslide damage.

Debris Flows are moving masses of loose mud, sand, soil, rock and water.

Lahars are mudflows that are composed of volcanic debris and water.

Largest Tsunami The wave with the highest run-up was triggered by a rockfall.

Gifts That Rock - What are the most popular gift items in the Geology.com store?

Yosemite Rockfall Hazards Learn what the Park Service is doing to reduce rockfall hazard.

Debris Flow Hazards Rapid landslides that can attain speeds over 30 miles per hour.

Geology Tools - Hammers, field bags, hand lenses, maps, hardness picks, gold pans.

Saidmarreh Landslide, Iran One of the world*s largest slides - over five cubic miles of debris!