is mountainous with a heavily indented coastline, dominated by the Cordillera Darwin. Most of this part of the island is included in the Alberto de Agostini National Park of Chile. History The earliest human settlement occurred more than 10,000 years ago, as people migrated from the mainland, perhaps under pressure from competitors. The Yaghan people were some of the earliest known humans settling in Tierra del Fuego. Certain archeological sites at locations such as Navarino Island, within the islands of Tierra del Fuego, have yielded artifacts and evidence of their culture from the Megalithic era. The name Tierra del Fuego derives from Portuguese explorer Ferdinand Magellan, who was the first European to visit these lands in 1520, on his voyage to the Philippines from Spain. He believed he was seeing the many fires (fuego in Spanish) of the Amerindians, which were visible from the sea and that the "Indians" were waiting in the forests to ambush his armada. These were fires lit by the Yamana Indians who lived in the northern part of the island, to ward off the low temperatures in the area. Originally called the "Land of Smoke," it was later changed to the more exciting "Land of Fire." The British commander Robert Fitzroy, on his first voyage aboard in 1830, captured four native Fuegians after they stole a boat from his ship. The men included Orundellico, later named Jemmy Button by his crew. Fitzroy taught them English and took them with him on his return to England, where he took them to Court to meet the King and Queen in London. They became early celebrities. The surviving three were returned to Tierra del Fuego on the second voyage of Beagle, which included the naturalist Charles Darwin, who made extensive notes about his visit to the islands. In July 1881 the island was divided between Argentina and Chile, each of which had previously claimed it entirely. The 1949 Tierra del Fuego earthquake took place on 17 December 1949, at 06:53:30. It recorded magnitude 7.8 in the Richter scale. Its epicenter was located in the east of the Chilean Tierra del Fuego Province, close to the Argentine border, at a depth of 30 km (19 mi). This was the most powerful earthquake ever recorded in the south of Argentina. It was felt with grade VIII in the Mercalli intensity scale, and affected the settlements and some others like Punta