A mesa (Spanish, Portuguese, Arabic and Arwi for "table")'s an elevated area of land with a flat top and sides that're usually steep cliffs. It takes its name from its characteristic table-top shape. It's a characteristic landform of arid environments, particularly the southwestern United States. Many examples are also found in Spain, North and South Africa, Arabia, India, Australia, and the Badlands and Colorado regions of North America. The largest mesa in the world's considered to be the Gra… (More on Mesa)