A unique geological feature characterised by small, eye-like holes in the salt flats. Walking across the salt flats allows you to truly appreciate the scale of the landscape and feel the texture of the salt crust underfoot. The Salar de Uyuni in Bolivia offers a variety of activities, from exploring its vast salt flats to discovering the surrounding lagoons and volcanoes. The salt flats, visible from low Earth orbit, display stark white hues that contrast sharply with the darker surrounding rock formations. For much of the year, the salt flats stretch out in a seemingly endless expanse of white, covering about 10,000 square kilometers (4,000 square miles). The salt flat was formed through the gradual evaporation of prehistoric lakes, leaving behind an extensive, flat salt crust.
- On our first tour in 2017, although it wasn’t windy at all, the lake had a greenish tint.
- The salt flats are at 3,656 m.a.s.l. Some people can suffer from altitude sickness at this elevation.
- The ideal time for stargazing is during the dry season (April to November) and particularly around new moon phases, when the skies are clear and dark.
- Plenty of travellers opt for the most basic Salar de Uyuni tour and have a fantastic time.
- Most travellers spend 2-3 days exploring Salar de Uyuni and its surroundings, which provides ample opportunity to visit the salt flats, lagoons, and geysers.
The first night’s stay in a salt hotel was very clean and comfortable, with fresh bedsheets, towels, and toilet paper provided. In 2017, on the first night, we stayed in private rooms in a salt hotel. If you want to see the sunset at the Salar de Uyuni, ask your travel agency whether it’s included. Most tour agencies start their tours at 10.30 am.
Make sure you know what the weather will be like before you book a tour and therefore what the landscape will look like. Also make sure you know exactly what the tour you are booking includes in terms of duration, accommodation options, guide and itinerary. Even if you decide to book a tour on arrival in Uyuni, try to do a little research on the company you choose and check reviews. You’ll need a warm sleeping bag (tour companies provide these, often at an additional charge), and don’t forget to pack warm clothing. Daytime can often feel pleasantly warm in the sun, but after it sets temperatures can easily plummet to around -10°C. If you’re booking a budget tour, expect there to be an additional cost.
Laguna Cañapa and Laguna Hedionda
Collectively, these features make the Salar de Uyuni approximately five times more effective for satellite calibration than the surface of the open ocean. Salar de Uyuni is a popular tourist destination, and consequently a number of hotels have been built in the area. Because of its location, large area, and flatness, the Salar is a major car transport route across the Bolivian Altiplano, except when seasonally covered with water. However, except for January, even in the rainy season the number of rainy days is fewer than 5 per month. It is covered with a solid salt crust varying in thickness between tens of centimeters and a few meters. Lacustrine mud that is interbedded with salt and saturated with brine underlies the surface of Salar de Uyuni.
The majority of travellers begin their Salar de Uyuni tour from Uyuni itself. Here are some of the key differences between the plethora of tours on offer. A multi-day Salar de Uyuni tour is essentially a tour of the reserve. In these hotels everything, from the walls and floors to the beds and tables, is constructed from salt!
- It holds half of the world’s lithium reserves and its vast, flat surface makes it an ideal location for calibrating satellite radar altimeters, which measure surface topography.
- A land of the opposites – it is where the geological formations of the past are in contact with the futuristic sceneries that have been a source of inspiration to filmmakers, photographers and even adventurers.
- It’s worth mentioning that you will spend most of your time in the car.
- As the largest salt flat on Earth, the Salar de Uyuni is widely regarded as one of the most effective natural calibration sites for Earth-observing satellites.
- The salt flats, visible from low Earth orbit, display stark white hues that contrast sharply with the darker surrounding rock formations.
On our first tour in 2017, although it wasn’t windy at all, the lake had a greenish tint. In the morning, when most tours come to Laguna, you won’t see the emerald green color. Laguna Colorada, or the Red Lagoon, is a shallow salt lake home to thousands of flamingos. I don’t think this stop was included in tours eight years ago. Another salt flat close to the Chilean border, Salar de Chiguana is a little sister of Salar de Uyuni.
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The best time to see the mirror effect at Salar de Uyuni is during the wet season, which is from December to March. Take altitude seriously, and make sure you acclimatize properly before a tour to fully enjoy the beauty of Salar de Uyuni. If you want to have a chance to see the beautiful mirror effect, you should visit in the wet season, which is from December to March. The best time to visit Salar de Uyuni depends on what you want to see. During the dry season, a thick crust of salt, covered with polygonal patterns, stretches to the horizon.
Its remarkable design features walls, floors, furniture, and even igloo-shaped roofs constructed from salt blocks that are carefully harvested from the surrounding salt flat. The dry season, which lasts from May to November, offers clear skies and the opportunity to observe the unique hexagonal salt patterns. Many visitors enjoy stopping at the Salt Museum, a quaint space made of salt bricks that features a spinmaya no deposit bonus code variety of carved sculptures.
Across more than 10,000 square kilometers, the elevation difference is barely around one meter.This is almost impossible in natural landscapes. The foundation of Salar de Uyuni goes back to a sequence of lakes that filled the Altiplano basin during the Pleistocene.In the past, huge inland lakes—like the prehistoric Lake Minchin—covered the region. Lisa is a writer and traveller who left her nine-to-five in London for life on the road.
Warm clothes – the altitude is high, and it gets quite cold at night, and below zero in winter months (June to August). If you don’t like rain and prefer dry weather, visit between May and November. But keep in mind that even in this season, there is no guarantee you will see the reflective effect. Unfortunately, our tour didn’t take us right to the lagoon; we could only see it from far away. On 2025 tour, it was very windy, and Laguna Verde had a bright green color. So there is no guarantee the lake will be green when you come there.
Here’s all you need to know about this unique experience. The fields of salt, extending as far as the eye can see and backed by distant mountains, create one of the most dramatic and unique vistas on Earth. Salar de Uyuni is the remains of an enormous prehistoric lake. In February 2024, the Copernicus Sentinel-3B mission conducted calibration activities over the salar for its Synthetic Aperture Radar Altimeter (SRAL). As part of its validation strategy, CryoSat-2 has relied on the salar, where its Interferometric synthetic-aperture radars (InSAR) capabilities were reinstated to enhance the precision of altimetric observations. The mission focused on calibrating radar-based measurements of surface topography.
Many first-time visitors to the area (including me!) are surprised to discover how much there is to see beyond the salt flat itself. The first such hotel, named Palacio de Sal, was erected in 1993–1995 in the middle of the salt flat, and soon became a popular tourist destination. The lithium in the salt flats contains more impurities, and the wet climate and high altitude make it harder to process. Through its reliable brands such as Gokite Oman, your journey to the largest salt flat in the world will be continuous, natural and memorable. By choosing green tours and taking care of any natural environment, it is possible to ensure that the future generations can still keep Exploring Salar de Uyuni in all its impeccable beauty.
Onward Travel ➡️
Polques Hot Springs are the most common hot springs stop on 3-day Uyuni tours. Standard tours allow time for taking perspective photos. That’s what it’s like when you visit the Salar de Uyuni, Bolivia’s enormous salt flat that stretches as far as your eyes can see. Alternatively, shorter one- to three-day tours are available from Uyuni or Tupiza, depending on your onward travel plans. Travellers with more time can opt for extended five- or nine-day tours from Salta, Argentina. From December to April, the wet season creates a stunning mirror effect across the salt flats.
Today they create an eerie environment and stand as a testament to the corrosive power of salt! The first stop on most tours is the Train Graveyard (El Cementerio de Trenes) on the dusty outskirts of Uyuni. The deserted plain is the perfect canvas for taking perspective photographs and when covered in a layer of water it becomes the world’s largest mirror, which makes for stunning reflective images. Sense of distance and perspective become skewed as the salty surface goes on mile after endless mile. As the water evaporated the salt crystalised and formed a crust, which is up to 10 m thick in some places. There are tours that run directly from the Chilean town of San Pedro de Atacama, which is close to the Bolivian border.
This has direct consequences for lithium extraction, tourism pressure, and local ecosystems. The Salar’s visual magic is not random—it’s atmospheric physics. So the famous mirror effect is not just pretty—it’s physics, geology, and climate working together.
Tips for Epic Perspective Photos at Salar de Uyuni
On the 2nd and 3rd days of a standard 3-day tour, you will be taken to beautiful lagoons, and you will see flamingos and vicuñas. Due to the proximity to these international borders, many travelers either start or end their time in Bolivia at Salar de Uyuni. The hotel’s interior showcases the artistry of local craftsmen, featuring intricate salt sculptures and designs that celebrate Bolivian culture.
When it dried, it left behind two modern lakes, Poopó and Uru Uru, and two major salt deserts, Salar de Coipasa and the larger Salar de Uyuni. Uyuni originates from the Aymara language and means a pen (enclosure); Uyuni is also the name of a town that serves as a gateway for tourists visiting the Salar. The large area, clear skies, and exceptional flatness of the surface make the Salar ideal for calibrating the altimeters of Earth observation satellites. The Salar was formed as a result of transformations of seven Late Pleistocene lakes whose progressive desiccation led to the accumulation of extensive evaporitic salt deposits.
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Snacks and water/drinks – food is provided, but in case you want extra in between the meals, pack some snacks and drinks. Sunblock, lip balm with SPF, and sunglasses – the sun is very harsh at high altitudes. You are provided blankets in hotels and refuges, but a down sleeping bag will make your sleep more comfortable. A rain jacket if you go during the wet season.
English-speaking guides aren’t standard so check with the tour company if one is included. Unless you’re confident in your Spanish skills, you’ll likely get more out of a tour with a guide who speaks English. There was so much more to see than I expected and the locations on days two and three were far less crowded because there were no daytrippers at these sites.
It’s also possible to take a tour starting in Tupiza – a great option for those coming from Argentina. It’s also possible to take a tour from La Paz with transport to Uyuni included as part of the package. It’s possible to book ahead or choose a tour company on arrival. As you’d probably expect with one of the most popular attractions in South America, there are endless choices when it comes to booking a tour. “One of my favourite things about the Salar De Uyuni tour was simply driving from location to location.
