Salar de Uyuni: Bolivia’s high-altitude salt horizon
Published on 08/12/2026 at 14:10 | Editorial responsibility: Rafael Müller, Editor-in-Chief AD HOC NEWS
Salar de Uyuni in southwest Bolivia stretches across the Altiplano as a vast salt flat with a hard white crust and a horizon that seems to erase distance. Sitting more than 3,600 m (around 11,800 ft) above sea level near the town of Uyuni, it forms a high plateau landscape where sky and ground can merge into a single pale surface.
A salt flat the size of a small country
Salar de Uyuni covers over 10,000 square kilometres (about 4,000 square miles), making it the largest salt flat on Earth.Uyuni Salt Flat The surface forms a broad, almost level expanse across the Andean plateau in the Potosí Department, with the Bolivian Altiplano stretching away in every direction.Andean plateau in southwest Bolivia
The salt crust lies at an elevation of around 3,656 m (11,995 ft), high enough that the air feels thin and the sun can be intense even in cool air.height of 3,656 metres Plate-like patterns form across the surface as the salt dries and cracks, creating an endless mosaic beneath the sky.
From ancient lake bed to lithium-rich crust
The salt flat occupies the deepest part of a former high-altitude lake known as Lake Tauca, which once covered much of the southern Altiplano before it evaporated in the late Pleistocene.what was once the deepest part of an enormous lake As the water retreated, it left behind dissolved minerals that crystallised into the salt crust that now covers the basin.
Beneath that crust lies a brine rich in lithium, sodium and other minerals, and Salar de Uyuni is associated with some of the largest known lithium reserves in the world.contains 50% to 70% of the world's known lithium reserves Small-scale salt extraction takes place on the surface, while discussions about wider lithium use have made this remote plateau part of global conversations about energy and technology.vast reserves of untapped lithium lie beneath
Light, water and islands of rock
For much of the year, Salar de Uyuni appears as a dry white plain of interlocking salt polygons, firm enough in places for vehicles to cross.thick, hard crust of salt During the rainy season, shallow water can spread across parts of the flat, creating a reflective layer that turns the surface into a giant mirror where clouds and mountains appear doubled against the ground.sometimes covered in clear water, making the salt flat also the largest natural mirror
Islands of older rock rise from the salt, crowned with cacti and offering raised viewpoints across the uniform expanse.a few islands, where the main foliage is cacti From these vantage points the scale of Salar de Uyuni becomes clear, with tracks etched lightly into the surface and distant volcanic peaks framing the white basin.
Visiting Salar de Uyuni: what travellers from Western Europe should know
- Salar de Uyuni lies in southwest Bolivia in the Potosí Department, and Uyuni town serves as the main gateway by road and rail across the Altiplano.
- The salt crust forms a broad, exposed plain at high elevation, so visitors spend time on open ground under strong sun and at over 3,600 m (11,800 ft).
- Areas of the flat can hold standing water in the rainy season, creating shallow flooded sections that vehicles cross while the ground underfoot remains hard and level.
- The official language is Spanish and the currency is the Bolivian boliviano. Entry requirements depend on your nationality; UK travellers can check the FCDO travel advice at gov.uk/foreign-travel-advice, Irish travellers the Department of Foreign Affairs at ireland.ie.
Searching for Salar de Uyuni on social platforms
These links open searches for Salar de Uyuni on each platform.
Frequently asked questions about Salar de Uyuni
Where is Salar de Uyuni?
Salar de Uyuni lies on the Bolivian Altiplano in the Potosí Department of southwest Bolivia, with Uyuni town to the southeast acting as the main access hub.
What can visitors expect on a visit?
Visitors travel across a wide, exposed salt surface at high altitude, with long views to surrounding volcanoes and, in wetter months, shallow reflective water in some areas.
What makes Salar de Uyuni distinctive among landscapes?
Its combination of vast area, high elevation, polygonal salt crust and seasonal mirror-like floods creates a landscape where horizon, sky and ground can appear to blend into one.
