From Socompa (border with the neighboring country of Chile), a mixed train (passenger + cargo) is climbing on her way to Salta and beyond the Atlantic Ocean ports ... the locomotive is a EMD GT-22 CU manufactured in Argentina in 1980. The Line is the famous C-14 branch of Ferrocarril Belgrano, just in the area of maximum height: 14,682 feet. At this point the air is oxygen-poor and costs a lot -to the photographer- jump off the train and running to take pictures.