A landslide is the movement of rock, soil, or debris down a slope due to gravity. Landslides can be triggered by factors such as heavy rainfall, earthquakes, volcanic activity, or human activities. They are significant in understanding slope stability, erosion, and the risks associated with mountainous regions.
Reference: Cruden, D. M., & Varnes, D. J. (1996). “Landslide Types and Processes.” In: Turner, A. K., & Schuster, R. L. (Eds.), Landslides: Investigation and Mitigation. Transportation Research Board Special Report 247.