Swampy ground is a type of wetland that is characterized by its soggy, muddy terrain. It is made up of four distinct components: BOG, MARSH, MIRE, and FEN. A BOG is a type of wetland that is acidic and low in nutrients, while a MARSH is a wetland that is characterized by its grassy vegetation. MIRE is a type of wetland that is composed of deep MUD and peat, while a FEN is a type of wetland that is fed by groundwater and surface water. Finally, MUD is a type of soil that is composed of fine particles of clay, silt, and organic matter. All of these components combine to form swampy ground.