Tren A Las Nubes

Rising from the Argentine plains into the Andean foothills, the Tren a las Nubes (Train to the Clouds) is one of South America’s most spectacular railway journeys. This engineering marvel snakes through dramatic mountain scenery, crossing vertiginous viaducts and zigzagging up to the altiplano at over 4,200 metres. For travellers with a taste for epic landscapes and vintage rail travel, it’s an unforgettable day trip from Salta.

Highlights & What to See

• La Polvorilla Viaduct: The iconic 224-metre-long, 63-metre-high steel bridge that marks the train’s highest point, offering staggering views across the Puna.
• Quebrada del Toro: A dramatic canyon of red-rock cliffs and cactus-studded slopes that the train winds through in the first hours of the journey.
• San Antonio de los Cobres: A high-altitude mining town where the train makes a brief stop; wander the market for local crafts and llama-themed souvenirs.
• Zigzag tracks: The train performs switchbacks and spirals to gain altitude, including the famous 'backing-up' manoeuvre at Tacuara station.
• Altiplano panoramas: Vast, desolate plains dotted with vicuñas and flamingo-filled salt flats – a photographer’s dream.

Suggested Time to Spend

Most travellers do the Tren a las Nubes as a full-day excursion from Salta, departing early morning (around 6am) and returning by late evening (around 8pm). The train journey itself lasts about 15 hours round-trip, including stops. It’s a long day, but the ever-changing scenery keeps you engaged. If you prefer a shorter option, consider taking the bus to San Antonio de los Cobres and joining the train only for the final leg over the viaduct – this cuts the day to roughly 8 hours.

Nearby Areas Worth Combining

• Salta: The charming colonial city where the train departs – spend a day exploring its plazas, museums and excellent empanadas.
• Cafayate: A wine region 2 hours south of Salta, famous for its Torrontés vineyards and striking Quebrada de las Conchas rock formations.
• Humahuaca: A colourful Andean village in the Quebrada de Humahuaca, a UNESCO World Heritage site with pre-Columbian ruins and vibrant markets.
• Purmamarca: Home to the Cerro de los Siete Colores (Hill of Seven Colours), a short hike from town; combine with a scenic drive through the Cuesta de Lipán.
• Los Cardones National Park: A vast protected area of giant cacti and high-altitude plains, ideal for a day trip from Salta or Cafayate.

Please check official sources for current details.