A map from 1906 showing the general highlands and lowlands of South America and the national boundaries at the time. The map is color-coded to show highlands over 4000 feet above sea level in red tint, above 1000 feet in buff tint, and lowlands in green. Mountain chains and systems are shown by hatchure. This map shows the Caribbean Sea, Atlantic, and Pacific, coastal features, and major rivers, as well as the physiographic regions of Andes Mountains, Llanos, Highlands of Guiana, Selvas, Highlands of Brazil, and the Pampas.