A flow landslide is a type of mass wasting event where a large amount of material, such as rock, soil, and vegetation, moves downhill as a viscous or fluid-like mass. This can include debris flows, mudflows, and lahars, which are all characterized by the movement of saturated material down a slope due to gravity. These types of landslides can be particularly destructive and pose a serious threat to communities and infrastructure in mountainous or hilly regions.