A Landslide is the movement of rock, soil and debris down a hillside or slope.
Landslides take lives, destroy homes, businesses, and public buildings, interrupt transportation, undermine bridges, derail train cars, cover marine habitat, and damage utilities.
The term landslide includes a wide range of ground movement, such as rock falls, deep failure of slopes, shallow debris flows and mudslides. Ground failures that result in landslides occur when gravity overcomes the strength of a slope.
Source: Wash. Military Department, Emergency Management Division
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