Argentina is a large, elongated country in the southern part of South America, neighbouring countries being Bolivia, Brazil, and Paraguay to the north, Uruguay to the north east and Chile to the west. In the east Argentina has a long South Atlantic Ocean coastline. Argentina is located in South America, and is the eighth-largest country in the world. The highest and the lowest points of South America are also located in Argentina: At 6,960m, Cerro Aconcagua is the tallest mountain in the Americas while Salinas Chicas, at 40m below sea level, is the lowest point in South America. At the southern tip of Argentina there are several routes between the South Atlantic and the South Pacific Oceans including the Strait of Magellan, the Beagle Channel, and the Drake Passage—as alternatives to sailing around Cape Horn in the open ocean between South America and Antarctica. The name Argentina derives from argentinos, the Ancient Greek diminutive (tinos) form for silver (argentos), which is what early Spanish explorers sought when they first reached the region in the sixteenth century.