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The Salar de Uyuni is the largest salt flat on Earth — a blinding white expanse in the Bolivian altiplano that turns into a giant mirror after rain. It's one of South America's most surreal and photogenic sights, and this guide covers when to visit, what to expect and how to plan a tour.
The Salar de Uyuni is a vast salt flat covering more than 10,000 square kilometres of Bolivia's high altiplano, at around 3,650m above sea level. Formed from prehistoric lakes, it's a dazzling, almost featureless plain of hexagonal salt crust, dotted with cactus-covered islands and ringed by volcanoes.
It's famous for two very different faces: a dry, blinding-white desert of salt, and — after rain — a perfect mirror reflecting the sky, one of the most extraordinary sights in all of South America.
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The salt flat offers two distinct experiences depending on the season:
Many travellers visit in the dry season for the classic tours; those chasing the mirror effect aim for the wetter months. Both are spectacular in their own way.
Most visits are organised as jeep tours from the town of Uyuni, ranging from a day to several days:
The multi-day tours are the most rewarding, revealing that the region is about far more than just the salt.
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This is high, remote and cold country. Nights are freezing, especially in the dry season, and the altitude means you should acclimatise beforehand — ideally in La Paz, Sucre or Potosí — before heading out.
Pack warm layers, sun protection, sunglasses, lip balm and a good camera.
Uyuni tours are generally good value by South American standards, though prices vary with the length and comfort of the tour. Uyuni is reachable by flight or overnight bus from La Paz, or overland as part of a wider Bolivia route.
Choosing a reputable operator matters here — the terrain is remote and vehicle reliability and driver experience make a real difference to both safety and enjoyment. It's not a place to cut corners.
The Salar de Uyuni is unforgettable, but it sits in remote, high-altitude terrain where good guides, reliable vehicles and sensible acclimatisation really count. Our small-group Bolivia trips fold Uyuni into a wider journey through the altiplano, with trusted local operators and the right pacing for the altitude. Explore our Bolivia trips and see the world's greatest salt flat the easy way.
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