Salinas Grandes: The Salt Flat on the Road to Chile
Salinas Grandes is a roughly 212 sq km salt flat straddling the border of Jujuy and Salta provinces, sitting at about 3,450m on Ruta Nacional 52 — the road that eventually climbs on to the Paso de Jama and the Chilean border. The white crust, several meters thick in places, is mined commercially and also draws travelers for the stark, mirror-like landscape, especially where thin standing water creates reflections after rain.
It's smaller and easier to visit than Bolivia's Salar de Uyuni, and works well as a half-day or full-day trip from Purmamarca, about 130km and a couple of hours' drive up a road that climbs through several distinct microclimates on the way. There's a small cooperative-run visitor area with basic stalls selling salt-based crafts, but this is otherwise a genuinely empty, high-altitude landscape.
Getting there
From Purmamarca, it's about 130km via RN52, roughly 1.5-2hr by car on a road that climbs steeply through the Cuesta de Lipán switchbacks before dropping onto the flat. From San Salvador de Jujuy, figure on the Purmamarca distance plus the additional ~65km down to Purmamarca first. A standard car can usually manage the route in good weather, but many travelers join an organized tour or hire a remise given the altitude gain and the switchback driving. No regular public bus serves the salar directly — you need a car, tour, or arranged transport.
Route: RN 9 + RN 52 (Cuesta de Lipán)
When to go
The dry surface, roughly April-November, is what most photos show — a cracked white expanse extending to the horizon. During and just after the summer rains (December-March), a thin layer of water can pool on parts of the salar, creating the mirror effect popular on social media, but road conditions to get there are less reliable in this season and access can be affected by storms. There's no single "correct" season — it depends whether you want the classic dry hexagon-crust look or the reflective water look, and you can't fully predict the water conditions in advance.
Altitude
At 3,450m, this is a significant jump from Purmamarca (2,192m) in a short drive, and altitude sickness is a real possibility even for people who felt fine lower in the Quebrada — headache, dizziness, and nausea are the common early signs. Move slowly once you arrive, avoid alcohol beforehand, drink more water than usual, and don't push a strenuous walk across the flat if you're feeling off. If you're combining this with Susques or onward to Chile the same day, you'll be gaining altitude further still.
Practical notes
- The visitor area has basic cash-only stalls; there are no ATMs anywhere near the salar.
- Cell signal is unreliable to nonexistent once you're on the salt flat itself.
- Sun protection is essential — UV reflecting off the white salt surface at this altitude is intense even on cool days; sunglasses and sunscreen are not optional here.
- Guided walks or tours of the salar are offered by the local cooperative and are worth taking if you want context on the salt-mining process, not just photos.
- Budget half a day minimum from Purmamarca including driving time; a full day if you want to combine it with lunch in Purmamarca or a stop at the Cuesta de Lipán viewpoint.
Frequently asked questions
Is Salinas Grandes as impressive as Bolivia's Salar de Uyuni?
It's smaller and doesn't have Uyuni's scale, but it's far more accessible as a day trip from the Quebrada de Humahuaca and still delivers the classic white salt flat landscape and photo opportunities.
Can I drive across the salt flat myself?
There are marked areas where vehicles are permitted to drive short distances onto the crust, but this should be done carefully and ideally with local guidance — straying off marked routes risks getting stuck or damaging a fragile surface.
Do I need oxygen or altitude medication for a day trip here?
Most healthy travelers manage a day trip without medication if they've spent a day or two acclimatizing lower in the Quebrada first; if you're prone to altitude sickness, talk to a doctor before your trip about preventive medication like acetazolamide.