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.
Uyuni itself offers little of interest and so it’s best to avoid spending more time here than necessary. Salar de Uyuni sits at 3,656 m.a.s.l. and some parts of the tour reach altitudes of above 4,500 m. Many travellers begin their tour in Uyuni and then continue on to San Pedro de Atacama in Chile. When booking a tour you’ll have the option of taking a round trip or including onward travel at the end of the tour.

• Dry Season (May to November):

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.
The itinerary is similar to the standard 3-day tour, just in reverse, but this route is usually more expensive. Tupiza is another starting point for alternative Salar de Uyuni tours. A 2-day tour from Uyuni covers everything included in the 1-day tour. A 1-day tour from Uyuni is the cheapest option to explore Salar de Uyuni. Most tours to Salar de Uyuni start from the small town of Uyuni.
From strange islands in a sea of blindingly bright salt to delicately colored mineral lakes in the Andean mountains, this is an unforgettable Bolivian landscape. When it dried up, it left a couple of seasonal puddles and several salt pans, including Salar de Uyuni. It was part of a prehistoric salt lake, Lago Minchín, which once covered most of southwest Bolivia. The world’s largest salt flat sits at a lofty 3653m (11,985ft) and blankets an amazing 12,000 sq km (4633 sq miles).
When the rain accumulates on the layer of salt, Salar de Uyuni is transformed into a tremendous mirror and reflects the clouds, sunrises and sunsets flawlessly. The skies are very clear and can be viewed without clouds to have a perfect view of the stars and also photography. It presents the most opportune moment to the travelers that wish to go exploring in 4×4 vehicles and see the islands that are found in the flats. 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. Salar de Uyuni is not just a vast expanse of salt, but it is located in southwest Bolivia, almost on the crest of the Andes, some 3,656 meters above sea level.

• A unique geological feature characterised by small, eye-like holes in the salt flats.
• Here’s all you need to know about this unique experience.
• During the dry season, a thick crust of salt, covered with polygonal patterns, stretches to the horizon.
• The two seasons have different viewpoints and therefore it is up to you to decide which one to watch depending on the type of experience you want to get.
• It is estimated to contain around 10 billion tonnes of salt!
• Epic Guides provide inspiration and first-person stories for a lifetime of unforgettable travel experiences.

What is Salar de Uyuni

It is possible to visit the salt flats independently and while I was there I saw people camping with bikes! In the dry season there is no water layer, instead you can observe the hexagonal salt tiles that form on the surface. If you’re only interested in seeing the salt flat itself and snapping some awesome perspective photos, then the one-day option may be for you.
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.
However, if you are travelling from La Paz (which is at a similar altitude) or Cusco (just 250 m lower) then you will likely be fine as you should have acclimatised. For private tours expect to pay significantly more. These are shared tours with usually five or six people per jeep.

• The best time to see the mirror effect at Salar de Uyuni is during the wet season, which is from December to March.
• The first stop on most tours is the Train Graveyard (El Cementerio de Trenes) on the dusty outskirts of Uyuni.
• It’s located near the Argentine border and a bit farther from the Uyuni salt flats.
• You can explore the Uyuni salt flats on your own, but after doing research and weighing the pros and cons, we decided to join a standard 3-day tour.
• Most tours are conducted in 4WD vehicles, with the driver also acting as the guide.
• Snacks and water/drinks – food is provided, but in case you want extra in between the meals, pack some snacks and drinks.
• It’s a unique landscape featuring giant cacti, some reaching over 10 meters tall, thriving amidst the harsh, salty environment.

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 variety of carved sculptures.
Some people decide to skip Isla Incahuasi and just walk around it to save 30 Bs, but I think it’s money well spent. There’s a short walk to the top of the island, and the entry fee is 30 Bs (not included in the tour price). Except for two cacti-filled islands, Salar de Uyuni is completely flat, creating an endless horizon perfect for fun perspective shots. Salar de Uyuni is a paradise for photographers. This is the area where salt is dug up, piled into large pyramid-shaped mounds, and left to dry in the sun.

How did this massive salt flat form? (Geological origin)

Most locals make their living from salt production. Drinks were provided with meals, usually water and Coke, and dinners often came with red wine. When we did a tour in 2025, we paid extra for private rooms. When I did a tour eight years ago, the accommodation was basic. The tour takes you through elevations ranging from about 3,600 m to 4,800 m.
Salar de Uyuni spreads over 10,582 km2, which is roughly 100 times the size of the Bonneville Salt Flats in the United States. The youngest prehistoric lake was Coipasa, which was radiocarbon dated to 11,500 to 13,400 years ago. Some 30,000 to 42,000 years ago, the area was part of a giant prehistoric lake, Lake Minchin.
Due to lack of conventional construction materials, many of them are almost entirely (walls, roof, furniture) built with salt blocks cut from the Salar. Salar de Uyuni is estimated to contain 10 billion tonnes (9.8 billion long tons; 11 billion short tons) of salt, of which less than 25,000 t is extracted annually. Lithium is concentrated in the brine under the salt crust at a relatively high concentration of about 0.3%. The brine is a saturated solution of sodium chloride, lithium chloride, and magnesium chloride in water. During the wet season, Titicaca overflows and discharges into Poopó, which in turn, floods Salar De Coipasa and Salar de Uyuni.
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.

The Art of Packing Travel Like a Pro

We chose a Spanish-speaking tour, and our basic Spanish was more than enough. It’s worth mentioning that you will spinmaya no deposit bonus code spend most of your time in the car. So, below are a few points to know before choosing a tour. I recommend booking in person, as it’s usually cheaper.

The island is a remnant of an ancient volcanic formation and was once part of a prehistoric lake. It’s a unique landscape featuring giant cacti, some reaching over 10 meters tall, thriving amidst the harsh, salty environment. The salt crusts and brine pools support a rich diversity of microbial communities, including halophilic archaea and bacteria that have adapted to the high salinity and other extreme conditions. The Salar de Uyuni is characterised by high salinity, low humidity, and a significant altitude, creating a challenging environment for most life forms. The savage beauty of this vast salt desert makes it one of South America’s most awe-inspiring spectacles.

If travelling to Uyuni by bus you will arrive early in the morning (around  6 or 7 am) and most tours begin at around 10 am, giving you time to scout around for a tour you like. During this time the salt is covered by a layer of water that provides a dramatic mirror effect and creates unique conditions for fabulous photos. At this time of year you will enjoy the quintessential views of the salt flats, with vast expanses of white landscape extending to the horizon.