Ferrocarriles Argentinos The only rail line catalogued as "profitable" was the Constitución-Mar del Plata section. On March 10, 1993, president Menem signed the decree for which all the long distance passenger services were definitely closed. Some of the provinces that lost their connection with Buenos Aires were Salta, Jujuy, Entre Ríos, Corrientes, Misiones, Mendoza, San Juan, San Luis, Catamarca and La Rioja. The closure caused many villages became isolated from the main cities of Argentina and younger inhabitants departured from their born towns looking for better opportunities. This happened in cities such as La Banda, Laguna Paiva, San Cristóbal, Navarro, Las Marianas
Climatic regions of Argentina temperate and arid with large thermal amplitudes, long summers, and a long frost free period which varies by altitude. In both the Quebrada de Humahuaca and Calchaquí valleys, winters are cold with frosts that can occur between March and September. In the valleys in the south in La Rioja and Catamarca Provinces, along with the southwest parts of Santiago del Estero Province, temperatures during the summer are very high averaging in January, while winters are mild averaging . Temperatures can exceed during the summer, particularly in the central valley of Catamarca (Valle Central de Catamarca) and the valley of La