Santa Cruz is a province of Argentina, located in the southern part of the country, in Patagonia. It borders Chubut province to the north, and Chile to the west and south. To the east is the Atlantic Ocean. It is the second largest province of the country (after Buenos Aires province), and the least densely populated in mainland Argentina.
The Tehuelches inhabited these lands before the arrivals of the Spanish colonisation. In 1520 Ferdinand Magellan arrived to what is currently known as San Julián Bay. 15 years later Martín de Alcazaba explored the area near the Chico River, which he named Gallegos River. Because of the attacks of British privateers, and after the visit of Francis Drake in 1578, the Spaniards sent Pedro Sarmiento de Gamboa to fortify and map the Strait of Magellan and prevent access to Spanish posts in the Pacific.