eroded plateau region of central and southeastern Brazil. Comprising more than half of the country's landmass, the highlands are located mainly in Minas Gerais, São Paulo, Goias, and Mato Grosso estados (states). Rising to an average elevation of 3,300 feet (1,000 m) above sea level, the highlands are characterized by low mountains, hilly uplands, and tabular plateaus and include Mato Grosso Plateau and Paraná Plateau. The Brazilian Highlands are geologically similar to the Guiana Highlands to the north, across the eastern Amazon River basin.