Sierra del Plata
The Sierra del Plata (Spanish term wanting to say mountain of money in French) was a legendary money treasure which one located in South America. The legend took origin problablement when survivors of a shipwreck accepted silver objects offered by the autochtones.
Early at the 16th century, the estuary of the Rio Uruguay and the Rio Paraná was named Rio of Plata ( river of money ) by Spanish because they believed that the river led to the Sierra del Plata. Although there never was proof of the real existence of this mountain, the area concerned was indeed rich in money mines.
The name of the Argentine was directly inspired by this episode of the history, Argentinian being derived from the Latin word argentum (meaning French money).
See too