 The main trail for this trade was called Camino de los chilenos and ran a length of about from Buenos Aires Province to the mountain passes of Neuquén Province.The "lonco" Calfucurá crossed the Andes from Chile to the Pampas around 1830 to aid the indigenous people, after Juan Manuel de Rosas, the governor of Buenos Aires, started to fight the Boreanos tribe.However, other sources directly contradict this statement, saying that de Rosas contacted the leader in Chile for help fighting against the Boreanos tribe.