A stream tumbles through moss in the Martial Mountains in the southern Andes, on the Canadon Negro trail, in Tierra del Fuego National Park, a day hike by ski lift above Ushuaia, Argentina, South America. The foot of South America is known as Patagonia, a name derived from coastal giants, Patag&atilde;o or Patagoni, who were reported by Magellan's 1520s voyage circumnavigating the world and were actually Tehuelche native people who averaged 25 cm (or 10 inches) taller than the Spaniards.