Train to the Clouds: Argentina’s Rail Wonder

Published on March 23, 2025

by William King

The early morning light washes over the Andean foothills, and with a rumble of steel, the Tren a las Nubes—Train to the Clouds—begins its steady ascent. Windows frame a world of red canyons, cactus-dotted slopes, and sky so vast it blurs the line between land and heavens.

We pass through tunnels carved into rock, cross rickety viaducts, and pause to witness breathtaking views as the train climbs to over 4,200 meters (13,780 feet). Oxygen is offered, but what really takes your breath away is the raw beauty of northern Argentina.

Why This Train Route Is Special and Recommended

The Train to the Clouds is not just one of the highest railways in the world—it’s a feat of engineering and a deep dive into the culture and landscapes of Salta Province. Originally built to serve the mining industry, it’s now one of Argentina’s top rail experiences.

Unlike traditional long-haul trains, this is an excursion-style journey combining bus and train, offering a full-day adventure into high-altitude terrain and indigenous heritage.

Reaches an altitude of over 4,200 m above sea level.
Crosses the iconic La Polvorilla Viaduct, 64 meters high.
Includes cultural stops with local markets and music.
Guided commentary in English and Spanish throughout the journey.
Oxygen and medical assistance available onboard.
Features unique Andean scenery rarely seen from rail.

What to Expect

Your journey begins in Salta with a bus ride through the Quebrada del Toro, followed by the train segment from San Antonio de los Cobres to La Polvorilla. The train moves slowly, allowing passengers to walk onboard and enjoy open viewing platforms.

The experience is carefully curated, with safety, education, and spectacle all built in:

Early morning departure (around 6:00 AM), return by evening.
Bus portion includes scenic and cultural stops.
Train segment lasts approx. 1.5 hours round trip.
Toilets and oxygen available onboard.
Onboard staff trained in altitude sickness response.
Markets and performances await at San Antonio de los Cobres.

Practical Info

The Train to the Clouds is operated by Tren a las Nubes, a tourism-focused service that blends bus and rail for maximum access and altitude gain. Advance booking is essential, especially during high season (May to October).

Start Point	Salta (by bus), Train from San Antonio de los Cobres
Total Duration	Full-day trip: approx. 14 hours total
Train Segment	San Antonio to La Polvorilla Viaduct and return
Ticket Price	Approx. 120–150 USD / 110–140 EUR
Class	Single class, assigned seats with panoramic windows
Recommended Stops	Quebrada del Toro, Tastil ruins, local artisan markets

How to Make It Work for Different Lifestyles

Though structured as a tour, this journey suits all types of travelers. Adventure-seekers enjoy the altitude challenge, while photographers and cultural travelers find inspiration in every turn of the track.

Families can enjoy a safe, educational experience with children.
Solo travelers appreciate the organized format and guided support.
Older travelers benefit from staff support and medical readiness.
Couples often book together as a highlight of Northern Argentina.

Common Mistakes

A few things can catch travelers off guard if they’re not careful:

Not preparing for altitude effects—hydrate and rest beforehand.
Booking last minute and missing limited seat availability.
Wearing light clothes—temperatures drop drastically at elevation.
Skipping breakfast before departure due to early start.

Beginner’s Recommendations

First time riding in extreme altitudes or Argentine rail? These basics will help:

Bring a reusable water bottle and small snacks.
Dress in layers—temps vary from warm to freezing.
Sit on the left side for the best outbound views.
Use motion sickness aids if sensitive to winding roads.

Advanced Tips

For travelers looking to get the most from this journey, here’s how to deepen the experience:

Combine with a multi-day tour of Salinas Grandes or Purmamarca.
Bring a portable oxygen canister if you’re prone to altitude issues.
Use mirrorless or zoom cameras—scenery is vast and detailed.
Visit in May or September for mild weather and lower crowds.

Takeaway

The Train to the Clouds isn’t about getting from point A to B—it’s about elevating your journey to the edge of the sky. With surreal landscapes, rich cultural encounters, and one of the world’s highest viaducts, this ride offers a perspective few ever see. It’s not just a train trip—it’s a rite of passage for travelers drawn to the extraordinary.