Terrace farming, also known as step farming and often simply called terracing, is a method of cultivation. Terrace farms are a series of step-like ledges supported by man-made walls. Crops are grown on the carved steps of flat land called terraces. Terrace farming is a way to grow crops on steep hills and mountainsides. Terraces are easier to cultivate than vertical slopes. Terraces prevent rain from eroding the soil. Terrace farming is practiced in many parts of the world including Asia, Africa, Europe and South America. The Incas were the first people to use terrace farming.