The world’s largest salt flat, Salar de Uyuni

Thursday, 19th November 2009 by

Salar de Uyuni in south-west Bolivia was once part of a massive prehistoric lake but today is the world’s largest salt flat. When dry it’s a barren landscape, so featureless that it’s great for perspective tricks – but during the wet season it becomes a spectacular giant mirror.


Salar de Uyuni is estimated to contain as much as 10 billion tonnes of salt, and about 25,000 tonnes is collected here each year, using the traditional method of sweeping the salt up into neat piles to dry before being carted away.

sal sal2

However, salt is not Salar de Uyuni’s only valuable mineral: it also contains an estimated 5.4 million tonnes of Lithium, which is estimated to be between 50% and 70% of the world’s entire lithium supply! As a vital part of many electric batteries demand for lithium is on the increase, but Bolivia has been reluctant to let foreign mining companies onto the flat, instead opting to build their own modest plant which should be operational by 2012.

In the meantime, Salar de Uyuni still helps the economy through tourism. Hotel de Sal Playa Bianca, or “The White Beach Hotel” was built right in the middle of the salt flat and constructed from the very same salt. Unfortunately, due to the difficulties in sanitation, it was closed down in 2002.


Thankfully tourists can still experience living in a house of salt at either Hotel Luna Salada or the newer Palacio del Sal, both of which are built just on the edge of the salt flat. In an effort to protect their building from degradation, the Palacio del Sal enforces a strict “no licking the walls” policy.

luna plan1

Tourists to the area may also take a visit to Incahuasi island, also known as Island of the Fish. Located within the salt flat it is technically not an island, and is home to no fish. If that doesn’t tempt you, you could always visit the nearby town of Uyuni, which has a massive train boneyard.