Train to the Clouds: Salta's Unmissable Excursion

The Train to the Clouds (Tren a las Nubes) is one of the most iconic experiences in Salta tourism and a must for anyone exploring northwestern Argentina. The journey climbs from 1,187 meters in the city of Salta up to 4,200 meters above sea level at the La Polvorilla Viaduct, crossing landscapes that shift in color with every mile and making this one of the highest railway routes in the world.

The train departs from Salta's historic Belgrano railway station, with refurbished carriages, comfortable seats, climate control, audio and screen systems, a dining car, and onboard medical assistance for passengers affected by altitude sickness. The full round trip covers 434 kilometers and combines history, engineering, and nature in a single unforgettable journey.

Along the way, travelers cross thirteen viaducts, two zigzags, two loops, and nine tunnels, all remarkable feats of early twentieth-century engineering. In Campo Quijano, visitors can see the first steam locomotive to run on these tracks, while in El Alisal the train overcomes a steep grade through a unique zigzag track system. Further along, the El Panteón viaduct and several abandoned stations are reminders of a bygone railway era.

The scenery changes dramatically with altitude: vegetation gives way to mountains in shades of green, pink, and brown, colored by the different minerals found in the region, including copper. Near Muñano station, travelers get a striking view of Nevado del Acay, a peak of nearly 6,000 meters.

San Antonio de los Cobres, sitting at 3,775 meters above sea level, is one of the most anticipated stops on the route. Visitors can explore its local craft fair, where Puna communities sell handwoven textiles made from llama, sheep, and goat wool, along with regional dishes such as locro, empanadas, llama milanesas, and mote with cheese.

The highlight of the trip is the La Polvorilla Viaduct, a steel structure supported by 40-meter iron pillars, built to span a gap of more than 200 meters. Reaching this point at 4,200 meters above sea level is one of the great attractions of the Train to the Clouds and a source of pride for the people of Salta.

Travelers wishing to add another stop on the way back can visit Santa Rosa de Tastil, an archaeological site linked to the Qhapaq Ñan trail, home to a site museum and a local artisans' center.

For full details on schedules, fares, and travel options (Bus Train BusTrain Only), check Welcome Argentina's dedicated page on the Train to the Clouds.

Travel tips

• Pack warm clothing, sunglasses, and sunscreen, since temperatures sharply at high altitude, even in summer.
• Avoid heavy meals and alcohol the day before the trip, and get a good night's sleep to help with acclimatization.
• Carry water and candieschewing gum to help ease the effects of altitude.
• Move slowly and avoid physical exertion during the stop at La Polvorilla due to the altitude.
• Bring your IDpassport and the printed booking voucher when boarding.
• Check weather conditions in advance, as this high-mountain excursion may be modifiedcanceled for safety reasons.