 A map of the existing freight network in Argentina (as of 2014) can be found here .A number of steam powered heritage railways (tourist trains) are in operation; the Old Patagonian Express (locally known as "La Trochita") in Patagonia, the Train of the End of the World (Southern Fuegian Railway) in Ushuaia, Tierra del Fuego and a short run Tren Histórico de Bariloche.A diesel-electric Tren a las Nubes in the province of Salta runs from the city of Salta to San Antonio de los Cobres.