Rosario and Puerto Belgrano Railway Rosario and Puerto Belgrano Railway The Rosario and Puerto Belgrano Railway (Spanish: Ferrocarril Rosario y Puerto Belgrano, and in French: Compagnie de Chemins de Fer Rosario-Puerto Belgrano) was a French-owned railway company which operated a broad gauge, , single track line between the cities of Rosario and Puerto Belgrano in Argentina. Puerto Belgrano, near the city of Bahía Blanca in Buenos Aires Province, is the main naval base in Argentina. The original idea behind the building of the railway was to link points that were closer to either Rosario or Bahía Blanca than they were to Buenos Aires, thereby taking
Salta–Antofagasta railway ("train to the clouds"), running between Salta and La Polvorilla. Nowadays, apart from some suburban trains running from Salta to Campo Quijano, the "Tren a las Nubes" is the only passenger train serving the line, after the cancellation of the "Tren Mixto" Salta-Socompa, that once linked Socompa with Tucumán and Buenos Aires (Retiro Station), via Córdoba and Rosario. The Chilean part of the line, also served only by freight trains, was the site of a proposed commuter rail line on the route running through Antofagasta. Salta–Antofagasta railway The Salta–Antofagasta railway, also named Huaytiquina, is a non-electrified single track railway line