One of the legends circulating amongst them was that of the Sierra de la Plata.
Sierra de la Plata literally means ‘Mountain of Silver’, and is a legend about a city that was filled with a quantity of silver that was almost inconceivable.
Whilst ‘ownership’ of Potosi was unclaimed until the arrival of the Spanish, the Sierra de la Plata is said to be ruled by a ‘White King’.
Some believe the legend of Sierra de la Plata came from Potosi Mountain.
The legend of the Sierra de la Plata probably has its origins in the early 16th century.
Through his conversations with the Guarani, Garcia became aware of stories told about the Incas, the Sierra de la Plata and the White King who ruled it.
Though these searches have been futile, the legend lives on in the Rio de la Plata and the country Argentina, both of which derived their names from the myth of the Sierra de la Plata.
Source: Ancient Origins