The Tren A Las Nubes Train, Salta Province, Argentina

The 10-car train can carry 640 passengers at an average speed of 35 km/h (21.7 mph). The C-C diesel-electric EMD GT22CU locomotive with 2,475 hp (1,846 kW) has two triple-sets of powered axles for traction, weights of over 100 t (98 long tons; 110 short tons), and consumes around 6 L (1.6 US gal) of fuel for every 1 kilometre (0.62 mi). The train, which stops only at San Antonio de los Cobres station for tourists to get off, see the town and buy local handicrafts, has a restaurant, folkloric events, and onboard medical facilities.
An average of 30,000 tourists visit the train each year. It runs from April to November, when the rain season is over, departing from Salta every Thursday and Saturday at 07:05, and returning around midnight. The train services include dining car, medical practice, audio, video, and bilingual guides. During the summer, from December to March, the Tren al Sol (English: Train to the Sun) travels from Salta to the Diego de Almagro station, at an altitude of 3,500 metres (11,500 ft).