This place is immense. It is over twelve thousand square kilometers in area, which makes it the largest salt flat in the world. To give an idea, that is over twenty five times larger than the more famous Bonneville Salt Flats in the United State. It also has the distinction of being the highest salt flats in the world at three thousand seven hundred meters above sea level. The mounds in this first picture are not, as you may first suspect, a naturally occurring phenomena. The hand of man is at work here.
This place is immense. It is over twelve thousand square kilometers in area, which makes it the largest salt flat in the world. To give an idea, that is over twenty five times larger than the more famous Bonneville Salt Flats in the United State. It also has the distinction of being the highest salt flats in the world at three thousand seven hundred meters above sea level. The mounds in this first picture are not, as you may first suspect, a naturally occurring phenomena. The hand of man is at work here.
The world’s largest salt flats, Salar de Uyuni in Bolivia, is an unearthly place that has to be seen to be believed.
The slat is literally scraped away from the surface and piled up in the mounds that you can see here by the locals. Salar de Uyuni is what remains of a prehistoric lake. All around it there are mountains which means there are no drainage outlets and the salt is left at the old bed of the lake. After it is scraped up these mounds are then created. This allows the water to evaporate more quickly and certainly makes the salt easier to transport away from the salt flats.
From a distance the salt flats look like a huge white sea. The tiles on the flats stretch on as if to infinity - and beyond. This in itself if simply awesome to behold - and there is no hyperbole there at all. It looks like something out of a science-fiction film - one half expects to see, at any minute, Captain Kirk appear being chased by a couple of Klingons. When there is rain - as there is occasionally even at this altitude - then something magical happens. The salt flats become a mirror of the sky.
The origins of the Uyuni goes back some forty thousand years. Then it made up part of the huge prehistoric Lake Minchin. With time the lake dried up. Two lakes still remain - the Uru Uru and (no sniggering at the back) the Poopó. Two salt flats were left, the smaller Salar de Coipasa and the Uyuni. Twelve thousand square kilometers is pretty large by anyone’s standards.
In terms of a wildlife vacation, it is probably not the best place to visit. However, on the edges of the salt flats you will find the ubiquitous lama.
You may not have heard of Uyuni, but our astronauts have. It is used as a target for calibrating and testing remotes sensing systems on satellites in orbit. Why? It is big - very big - and has an incredibly smooth surface which is highly reflective when it is covered in water, making it perfect for that task.
Just as you think you have seen it all, something else comes in to view that will astonish you. You will also get the opportunity to see this amazing ‘tree’ made out of rock. This peculiar product of millennia of erosion is testimony to the amazing strangeness of our planet when left to its own devices.
Coincidentally the major minerals to be found in salt are halite and gypsum. One use of halite is to keep ice off our pathways and roads while gypsum is used as a finish for walls and ceilings - you probably know it as drywall. There are also considerable stocks of lithium in the salar, which are used in the production of batteries and certain pharmaceuticals. However, Bolivia as a nation exports none at the moment. It does not want large multinationals muscling in and is preparing to develop its own strategies to ‘mine’ the lithium.
Certainly, the mounds of salt only add on to the unearthly appearance of Uyuni. Even though it is extremely isolated it, located in the Oruro and Potosi departments in the Southwest of the country, the Bolivians encourage tourism to the area. As it is near the crest of the Andes it is on the tourist trail and can be reached without too much difficulty for the more adventurous traveler.
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