Board the legendary Tren a las Nubes from Salta for a full-day ascent into the high Andes. This guided bus-and-train tour delivers dramatic viaduct views, high-altitude towns, and local craft markets — all in a single long, unforgettable day.
More ways to explore the area's outdoor wonders
You step onto the bus before dawn in Salta and watch the city lights shrink as the road climbs toward the high Andean plateau. The air thins, the scrub changes to open puna, and the train — the famed Tren a las Nubes — waits at San Antonio de los Cobres to push you past switchbacks and salt-tinted slopes to the La Polvorilla viaduct.
Difficulty
easy
Duration
14 hours
Fitness Level
Suitable for travelers in average physical condition; expect long periods seated, short on-foot stops and light walking at altitude
Wildlife
History
The highland railway was developed to serve mining and trade routes in the early 20th century; the Polvorilla viaduct became an emblem of ambitious mountain engineering.
Conservation
The puna is fragile: stick to trails in village zones, avoid single-use plastics, and support local artisans whose income aids community resilience.
Reserve your spot on the Train to the Clouds Experience with Transfers from Salta Hotels today and enjoy a trusted, highly rated experience designed to help you make the most of your adventure.
Layer for altitude swings
Temperatures vary from warm sun to cold winds at 4,000+ m; pack insulating and windproof layers you can add or remove quickly.
Hydrate and eat light
Start hydrating the day before and carry water; high altitude increases dehydration and low energy, so eat small meals.
Bring ID and passport info
You must provide passport details at booking and carry ID for check-in at the station and train.
Protect against sun and wind
High-elevation UV is intense — use SPF, sunglasses and a brimmed hat; windproof shell helps on exposed stops.
Warm insulating layer (down or synthetic)
Provides warmth for cold mornings and high-elevation stops.
Sun protection (sunglasses, SPF 50, hat)
Crucial at high altitude where UV exposure is stronger.
summer
Reusable water bottle with filter or tablets
Keeps you hydrated during long bus rides and at stops where potable water may be limited.
Comfortable walking shoes
Needed for short town walks, the viaduct platform and uneven surfaces in small villages.