page_title: Patagonia
section_title: Scientific exploration (1764–1842)
hierarchical_section_title: Patagonia / History / Scientific exploration (1764–1842)
context_page_description: Patagonia is a sparsely populated region at the southern end of South America, shared by Argentina and Chile. The region comprises the southern section of the Andes Mountains, lakes, fjords, and glaciers in the west and deserts, tablelands and steppes to the east. Patagonia is bounded by the Pacific Ocean on the west, the Atlantic Ocean to the east, and many bodies of water that connect them, such as the Strait of Magellan, the Beagle Channel, and the Drake Passage to the south.
  The Colorado and Barrancas rivers, which run from the Andes to the Atlantic, are commonly considered the northern limit of Argentine Patagonia. The archipelago of Tierra del Fuego is sometimes included as part of Patagonia. Most geographers and historians locate the northern limit of Chilean Patagonia at Huincul Fault, in Araucanía Region.
  At the time of the Spanish arrival, Patagonia was inhabited by multiple indigenous tribes. In a small portion of northwestern Patagonia, indigenous peoples practiced agriculture, while in the remaining territory, peoples lived as hunter-gatherers, traveling by foot in eastern Patagonia or by dugout canoe and dalca in the fjords and channels.
context_section_description: In the second half of the 18th century, European knowledge of Patagonia was further augmented by the voyages of the previously mentioned John Byron (1764–1765), Samuel Wallis (1766, in the same HMS Dolphin which Byron had earlier sailed in) and Louis Antoine de Bougainville (1766). Thomas Falkner, a Jesuit who resided near forty years in those parts, published his Description of Patagonia (Hereford, 1774); Francisco Viedma founded El Carmen, nowadays Carmen de Patagones and Antonio settled the area of San Julian Bay, where he founded the colony of Floridablanca and advanced inland to the Andes (1782). Basilio Villarino ascended the Rio Negro (1782).
  Two hydrographic surveys of the coasts were of first-rate importance; the first expedition (1826–1830) included HMS Adventure and HMS Beagle under Phillip Parker King, and the second (1832–1836) was the voyage of the Beagle under Robert FitzRoy. The latter expedition is particularly noted for the participation of Charles Darwin, who spent considerable time investigating various areas of Patagonia onshore, including long rides with gauchos in Río Negro, and who joined FitzRoy in a 200 mi (320 km) expedition taking ships' boats up the course of the Santa Cruz River.
caption: Tehuelche warriors in Patagonia
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