Worldwide, landslides occur and cause thousands of casualties and billions in monetary losses annually. read more
Landslides due to volcanic activity are some of the most devastating types. Volcanic lava may melt snow at a rapid rate, causing a deluge of rock, soil, ash, and water that accelerates rapidly on the steep slopes of volcanoes, devastating anything in its path. read more
Type of material: Landslides are composed of bedrock, unconsolidated sediment and/or organic debris. Nature of movement: The moving debris can slide, slump, flow or fall. read more
Translation of landslides from some legacy maps requires a geologist to interpret the original author's confidence from the graphics on those maps. Most commonly, older maps have two types of symbols indicating confidence: a landslide polygon is either shown with a query or with arrows indicating direction of movement. read more