The urban area of Antofagasta begins abruptly, breaking the monotony of the desert and is located in the coastal plains, south of the “Peninsula of Mejillones” and north of “Cerro Coloso”.
Efasa is administered by Bolivian Railway Investors, a subsidiary of Antofagasta PLC, which owns the railway from the frontier between Abaroa and Ollagüe down to the Chilean Pacific coast ports of Antofagasta and Mejillones.
Later, in 2007, he was sent on loan to Municipal Mejillones (another third division team) after Cobreloa gave up their reserve team.
The main towns on the Pacific coast named, were from north to south, Cobija, Mejillones and Antofagasta.