Landslides A USGS fact sheet about landslides and events that trigger them.
Debris Flows are moving masses of loose mud, sand, soil, rock and water.
Geology Tools - Hammers, field bags, hand lenses, maps, hardness picks, gold pans.
Yosemite Rockfall Photos A photo sequence of a rockfall and debris avalanche by Herb Dunn.
Largest Landslides Heart Mountain and Storegga - Earth*s largest known landslides.
Yosemite Rockfall Hazards Learn what the Park Service is doing to reduce rockfall hazard.
Lahars are mudflows that are composed of volcanic debris and water.
||Debris Flow Hazards
Debris Flow Hazards Rapid landslides that can attain speeds over 30 miles per hour.
Largest Tsunami The wave with the highest run-up was triggered by a rockfall.
Homeowners Insurance and Landslides Most policies do not cover landslide damage.
Saidmarreh Landslide, Iran One of the world*s largest slides - over five cubic miles of debris!