It was once a place of ceremony in Inca times (hausi means house in Quechua). Colchani is a small salt-processing village 20 km south of Uyuni. Remnants of a former era, the disused trains lie abandoned and rusting in the salty winds. The great expanse of the white stuff, divided into hexagonal salt tiles, creates an otherworldly landscape.
- The tour takes you through elevations ranging from about 3,600 m to 4,800 m.
- The focal point of any Salar de Uyuni tour is, of course, the world’s largest salt flat.
- There are usually fewer tourists and no entry fee.
- It’s an absolute must-visit if you’re exploring Bolivia and South America.
- In February 2024, the Copernicus Sentinel-3B mission conducted calibration activities over the salar for its Synthetic Aperture Radar Altimeter (SRAL).
- 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.
- If you have enough time, I highly recommend taking a 3-day tour.
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 spinmaya no deposit bonus code desiccation led to the accumulation of extensive evaporitic salt deposits.
I am not a fan of commercial tours and wanted to experience Salar de Uyuni independently. South America has stunning salt flats, but Salar de Uyuni is the world’s largest at about 4,674 sq mi (12,106 sq km). Be sure to check out the Dakar Rally monument located in Colchani, right at the edge of the salt flats.
Day 2 – Heading south to Laguna Colorada
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. However, travelers should take great care in choosing which tour operator to go with when visiting the salt flats. The great news is there is no bad time to visit the salt flats in Bolivia and each season has its advantages. 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. This breathtaking natural wonder attracts thousands of travellers each year, who come to marvel at the majestic salt flats spanning over 10,000 square kilometres.
Incahuasi Island
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.
Of course, there are also many reputable tour operators in the area who will ensure your experience of this natural wonder is both memorable and safe. Epic Guides provide inspiration and first-person stories for a lifetime of unforgettable travel experiences. A dried lake becomes a salt desert.A salt desert becomes a mirror.And a mirror becomes a global symbol of surreal natural beauty. High altitude → thin air → less scatteringWhite salt → strong reflectionFlat surface → no curvature effects
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- Lacustrine mud that is interbedded with salt and saturated with brine underlies the surface of Salar de Uyuni.
- Laguna Verde (Green Lake) turns green when strong winds lift the sediments of arsenic, copper, lead, and other minerals from the bottom of the lake.
- 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.
- You’ll need a warm sleeping bag (tour companies provide these, often at an additional charge), and don’t forget to pack warm clothing.
- You should be an experienced cyclist and be prepared for long distances.
- 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.
Eduardo Avaroa Andean Fauna National Reserve
Now one of the key stops on Salar de Uyuni tours, it’s become something of a tourist trap. The area was once covered by a huge saltwater lake, which dried up some 30,000–40,000 years ago. The focal point of any Salar de Uyuni tour is, of course, the world’s largest salt flat. Known locally as Salar de Uyuni, the salt flats are part of the Altiplano, a vast plateau that extends for 965 km from southern Peru to the southwestern corner of Bolivia. 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. Multiple fatal incidents have occurred at the salt flat as a result of poorly maintained vehicles, untrained drivers, speeding, a disregard for the inhospitable conditions, and lack of regulation for tour companies.
On both tours, the food was great, and there was plenty of it — we couldn’t even finish everything. The first night’s accommodation (salt hotel) was very clean and comfortable, with fresh bedsheets, towels, and toilet paper provided. Don’t underestimate the altitude and make sure to acclimatise before taking a tour. Most tours are conducted in 4WD vehicles, with the driver also acting as the guide. I’ve done the 3-day Salar de Uyuni tour twice with different agencies, eight years apart, in 2017 and 2025.
Laguna Colorada
It’s an absolute must-visit if you’re exploring Bolivia and South America. It’s a vast expanse of salt stretching to the horizon. If you’re travelling from Peru, the easiest route is via Peru Hop to La Paz, followed by the overnight bus to Uyuni. The most popular starting point for exploring Salar de Uyuni is the town of Uyuni, especially for travellers coming from within Bolivia. December offers the most sunshine, with an average of 7 hours of sunlight per day. January is the hottest month in Uyuni, with an average temperature of 15 °C (59 °F), while July is the coldest, averaging 12 °C (54 °F).
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.
If you are coming from Argentina it is possible to book tours that begin in Tupiza. Most people time their arrival for the morning of the start of their tour. There is nothing really of interest in Uyuni itself so it’s not worth spending much time here. Be aware that December and January are the wettest months and sometimes excessive rain can lead to tour cancellations. The clear night skies offer great star-gazing opportunities and you’ll also be able to visit some places that aren’t accessible during the wet season.
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.
Travel Interests
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.
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.