The South American Plains are a vast area of flat land that stretches across the continent. The three main regions of the South American Plains are the PAMPAS, Campos, and Llanos. The PAMPAS is a fertile grassland located in Argentina, Uruguay, and southern Brazil. The Campos is a vast savanna located in central Brazil. The Llanos is a tropical grassland located in Venezuela and Colombia. All three regions are characterized by their flat terrain and abundance of grasslands.