In simplest terms, "Mud Flow" is a form of mass movement in which muddy water flows or slides rapidly from one place to another. Mud could be nothing but a coarse, irregular combination of water, soil, slit, sand, clay, debris, organic matter, pebbles and/or several other particles. Water falling from steep slopes has the potential to wash away the upper part of soil of that area and deposit it at other places (a process called as soil erosion). Usually volcanic regions (because of their negligible or no vegetation cover) and regions with high precipitation (like rainfall, snowfall, etc.) are vulnerable for frequent soil erosions and, hence, mudflows (as vegetation prevents soil erosion). Because of the speed of flowing water and the heavy volume of sediments it carries, mudflows can be very destructive in nature.