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Coordinates: 20°08′01.59″S 67°29′20.88″W / 20.1337750°S 67.4891333°W / -20.1337750; -67.4891333
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The Salar serves as the major transport route across the Bolivian [[Altiplano]] and is a major breeding ground for several species of [[flamingo]]s. Salar de Uyuni is also a climatological transitional zone since the towering tropical [[Cumulus congestus cloud|cumulus congestus]] and [[cumulonimbus incus]] clouds that form in the eastern part of the salt flat during the summer cannot permeate beyond its drier western edges, near the Chilean border and the [[Atacama Desert]].{{citation needed|date=June 2016}}
The Salar serves as the major transport route across the Bolivian [[Altiplano]] and is a major breeding ground for several species of [[flamingo]]s. Salar de Uyuni is also a climatological transitional zone since the towering tropical [[Cumulus congestus cloud|cumulus congestus]] and [[cumulonimbus incus]] clouds that form in the eastern part of the salt flat during the summer cannot permeate beyond its drier western edges, near the Chilean border and the [[Atacama Desert]].{{citation needed|date=June 2016}}

Salar de Uyuni was the shooting location for a major battle scene in [[Disney]]'s blockbuster 2017 movie ''[[Star Wars: The Last Jedi]]'', representing the planet Crait.<ref>{{cite web |url=http://remezcla.com/film/the-sights-of-bolivia-are-displayed-in-the-last-jedi/ |title=The Breathtaking Bolivian Salt Flats Play an Important Role in ‘Star Wars: The Last Jedi |last=Lopez |first= Kristen |publisher= Remezcla LLC. |date=2017-12-15 |accessdate=2017-12-26 }}</ref>


==Formation, geology, and climate==
==Formation, geology, and climate==
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|doi=10.1038/35055524}}</ref>
|doi=10.1038/35055524}}</ref>


Lacustrine mud that is interbedded with salt and saturated with brine underlies the surface of Salar de Uyuni. The brine is a saturated solution of [[sodium chloride]], [[lithium chloride]], and [[magnesium chloride]] in water. It is covered with a solid salt crust varying in thickness between tens of centimeters and a few meters. Occasionally, the salt surface crust cracks, revealing round holes where the underlying sendiments beneath can be seen, called [https://dominik-birk.com/2016/11/19/thru-hiking-the-high-desert-of-south-bolivia/dscf4778/ "Ojos de Aguas"]. The center of the Salar contains a few islands, which are the remains of the tops of ancient volcanoes submerged during the era of Lake Minchin. They include unusual and fragile coral-like structures and deposits that often consist of fossils and algae.<ref name=trav1/>
Lacustrine mud that is interbedded with salt and saturated with brine underlies the surface of Salar de Uyuni. The brine is a saturated solution of [[sodium chloride]], [[lithium chloride]], and [[magnesium chloride]] in water. It is covered with a solid salt crust varying in thickness between tens of centimeters and a few meters. The center of the Salar contains a few islands, which are the remains of the tops of ancient volcanoes submerged during the era of Lake Minchin. They include unusual and fragile coral-like structures and deposits that often consist of fossils and algae.<ref name=trav1/>


The area has a relatively stable average temperature with a peak at 21&nbsp;°C in November to January and a low of 13&nbsp;°C in June. The nights are cold all through the year, with temperatures between −9&nbsp;°C and 5&nbsp;°C. The relative humidity is rather low and constant throughout the year at 30&nbsp;% to 45&nbsp;%. The rainfall is also low at 1&nbsp;mm to 3&nbsp;mm per month between April and November, but it may increase up to 80&nbsp;mm in January. However, except for January, even in the rainy season the number of rainy days is fewer than 5 per month.<ref name=ieee/>
The area has a relatively stable average temperature with a peak at 21&nbsp;°C in November to January and a low of 13&nbsp;°C in June. The nights are cold all through the year, with temperatures between −9&nbsp;°C and 5&nbsp;°C. The relative humidity is rather low and constant throughout the year at 30&nbsp;% to 45&nbsp;%. The rainfall is also low at 1&nbsp;mm to 3&nbsp;mm per month between April and November, but it may increase up to 80&nbsp;mm in January. However, except for January, even in the rainy season the number of rainy days is fewer than 5 per month.<ref name=ieee/>
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|first=Ben
|first=Ben
|last=Box
|last=Box
|author2=Kunstaetter, Robert |author3=Kunstaetter, Daisy |author4=Groesbeck, Geoffrey
|author2=Kunstaetter, Robert |author3=Kunstaetter, Daisy |author4=Groesbeck, Geoffrey
|publisher=Footprint Travel Guides
|publisher=Footprint Travel Guides
|year=2007
|year=2007
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|publisher=National Geographic
|publisher=National Geographic
|date=2007-07-25
|date=2007-07-25
|accessdate=2009-09-01}}</ref> . It is made out of 10&nbsp;500 tons of salt and spanning 4&nbsp;500 square feet<ref>{{Cite news|url=http://www.businessinsider.com/hotel-made-of-salt-2015-12/?IR=T&r=SG|title=This hotel is made of 10&nbsp;500 tons of salt|work=Business Insider|access-date=2017-12-10|language=en}}</ref> within the Salar, and boasts facilities such as a dry sauna, steam room, whirlpool and saltwater baths. However, its location in the center of a desert caused sanitation problems, as most waste had to be collected manually. Other salt hotels in the area include [http://www.lunasaladahotel.com.bo/ Sal Luna Salada], and [http://www.hotelcristalsamana.com.bo/ Hotel de Sal Cristal Samaña].
|accessdate=2009-09-01}}</ref> However, its location in the center of a desert caused sanitation problems, as most waste had to be collected manually. Mismanagement caused serious environmental pollution and the hotel had to be dismantled in 2002.<ref>{{cite book
|url=https://books.google.com/books?id=peBeMlMgcD4C&pg=PA259
|pages=259
|title=The Rough Guide to South America
|first=Harry
|last=Adès
|publisher=Rough Guides
|year=2004
|isbn=1-85828-907-6}}</ref><ref name=german>{{cite web
|language=German|work=hbernreuther.de
|url=http://www.hbernreuther.de/Brasilien_Bolivien/Palacio_del_Sal/palacio_del_sal.html
|title=Palacio del Sal}}</ref>


===Train cemetery===
===Train cemetery===
One major tourist attraction is an antique train cemetery. It is 3&nbsp;km outside Uyuni and is connected to it by the old train tracks. The town served in the past as a distribution hub for the trains carrying minerals en route to [[Pacific Ocean]] ports. The rail lines were built by British engineers arriving near the end of the [[19th century]] and formed a sizeable community in Uyuni. The engineers were invited by the British-sponsored Antofagasta and Bolivia Railway Companies, now [[Ferrocarril de Antofagasta a Bolivia]]. The rail construction started in 1888 and ended in 1892. It was encouraged by Bolivian President [[Aniceto Arce]], who believed Bolivia would flourish with a good transport system, but it was also constantly sabotaged by the local Aymara indigenous Indians who saw it as an intrusion into their lives. The trains were mostly used by the mining companies. In the 1940s, the mining industry collapsed, partly because of mineral depletion. Many trains were abandoned, producing the train cemetery. There are proposals to build a museum from the cemetery.<ref name=trav1/>
One major tourist attraction is an antique train cemetery. It is 3&nbsp;km outside Uyuni and is connected to it by the old train tracks. The town served in the past as a distribution hub for the trains carrying minerals en route to [[Pacific Ocean]] ports. The rail lines were built by British engineers arriving near the end of the [[19th century]] and formed a sizeable community in Uyuni. The engineers were invited by the British-sponsored Antofagasta and Bolivia Railway Companies, now [[Ferrocarril de Antofagasta a Bolivia]]. The rail construction started in 1888 and ended in 1892. It was encouraged by Bolivian President [[Aniceto Arce]], who believed Bolivia would flourish with a good transport system, but it was also constantly sabotaged by the local Aymara indigenous Indians who saw it as an intrusion into their lives. The trains were mostly used by the mining companies. In the 1940s, the mining industry collapsed, partly because of mineral depletion. Many trains were abandoned, producing the train cemetery. There are proposals to build a museum from the cemetery.<ref name=trav1/>
{{Wide image|Uyuni Décembre 2007 - Cimetière de Trains 1.jpg|1100px|Cemetery of trains near the town of [[Uyuni]].}}
{{Wide image|Uyuni Décembre 2007 - Cimetière de Trains 1.jpg|1100px|Cemetery of trains near the town of [[Uyuni]].}}

=== Photography ===
Salar de Uyuni also makes a photography haven for tourists. The rainy season at the Salar is from December to April while the dry season is from May to November. The rainy season lets you view the Salar’s breathtaking mirror effect, where the waters below represent the skies above so it becomes impossible to tell where the sky ends and the land begins. However, excessive rains may cause tour cancellations or certain areas to be inaccessible. In the dryer seasons, the temperature will be colder and with the ground hardened. Tourists can drive through the stark white landscape to places that aren’t accessible during rainy seasons. With its endless horizons which makes the perfect backdrop for photography, optical illusion shots are extremely popular. The horizon will give the perspective that the objects nearer to the camera are larger than the objects that are further away.<ref>{{Cite news|url=https://www.tripzilla.com/salar-de-uyuni-things-to-know-do/70904|title=10 Things To Know & Do While Visiting Salar de Uyuni, The World’s Largest Salt Flat|date=2017-11-23|work=TripZilla|access-date=2017-12-10|language=en-US}}</ref>


==Satellite calibration==
==Satellite calibration==

Revision as of 13:08, 15 March 2018

20°08′01.59″S 67°29′20.88″W / 20.1337750°S 67.4891333°W / -20.1337750; -67.4891333

Location of Salar de Uyuni.
Salar de Uyuni viewed from space, with Salar de Coipasa in the top left corner.
Mountains surrounding the Uyuni salt flat during sunrise, Daniel Campos Province, Potosí Department, southwestern Bolivia, not far from the crest of the Andes.

Salar de Uyuni (or Salar de Tunupa)[1] is the world's largest salt flat at 10 582 square kilometers (4 086 sq mi). It is in the Daniel Campos Province in Potosí in southwest Bolivia, near the crest of the Andes and is at an elevation of 3 656 meters (11 995 ft) above sea level.[2]

The Salar was formed as a result of transformations between several prehistoric lakes. It is covered by a few meters of salt crust, which has an extraordinary flatness with the average elevation variations within one meter over the entire area of the Salar. The crust serves as a source of salt and covers a pool of brine, which is exceptionally rich in lithium. It contains 50 % to 70 % of the world's known lithium reserves,[3] which is in the process of being extracted. The large area, clear skies, and exceptional flatness of the surface make the Salar an ideal object for calibrating the altimeters of Earth observation satellites.[4][5][6][7][8]

The Salar serves as the major transport route across the Bolivian Altiplano and is a major breeding ground for several species of flamingos. Salar de Uyuni is also a climatological transitional zone since the towering tropical cumulus congestus and cumulonimbus incus clouds that form in the eastern part of the salt flat during the summer cannot permeate beyond its drier western edges, near the Chilean border and the Atacama Desert.[citation needed]

Formation, geology, and climate

The salar is composed of a salt surface crust overlying brine saturated sediments.

Salar de Uyuni is part of the Altiplano of Bolivia in South America. The Altiplano is a high plateau, which was formed during uplift of the Andes mountains. The plateau includes fresh and saltwater lakes as well as salt flats and is surrounded by mountains with no drainage outlets.[9]

The geological history of the Salar is associated with a sequential transformation between several vast lakes. Some 30 000 to 42 000 years ago, the area was part of a giant prehistoric lake, Lake Minchin. Its age was estimated from radiocarbon dating of shells from outcropping sediments and carbonate reefs and varies between reported studies. Lake Minchin (named after Juan B. Minchin of Oruro[10]) later transformed into Paleo Lake Tauca having a maximal depth of 140 meters (460 ft), and an estimated age of 13 000 to 18 000 or 14 900 to 26 100 years, depending on the source. The youngest prehistoric lake was Coipasa, which was radiocarbon dated to 11 500 to 13 400 years ago. 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. Salar de Uyuni spreads over 10 582 km2, which is roughly 100 times the size of the Bonneville Salt Flats in the United States. Lake Poopó is a neighbor of the much larger Lake Titicaca. During the wet season, Titicaca overflows and discharges into Poopó, which, in turn, floods Salar De Coipasa and Salar de Uyuni.[11]

Lacustrine mud that is interbedded with salt and saturated with brine underlies the surface of Salar de Uyuni. The brine is a saturated solution of sodium chloride, lithium chloride, and magnesium chloride in water. It is covered with a solid salt crust varying in thickness between tens of centimeters and a few meters. The center of the Salar contains a few islands, which are the remains of the tops of ancient volcanoes submerged during the era of Lake Minchin. They include unusual and fragile coral-like structures and deposits that often consist of fossils and algae.[12]

The area has a relatively stable average temperature with a peak at 21 °C in November to January and a low of 13 °C in June. The nights are cold all through the year, with temperatures between −9 °C and 5 °C. The relative humidity is rather low and constant throughout the year at 30 % to 45 %. The rainfall is also low at 1 mm to 3 mm per month between April and November, but it may increase up to 80 mm in January. However, except for January, even in the rainy season the number of rainy days is fewer than 5 per month.[8]

Incahuasi island in the center of the Salar.

Economic influence

Salt production at the Salar.

The Salar contains a large amount of sodium, potassium, lithium and magnesium (all in the chloride forms of NaCl, KCl, LiCl and MgCl2, respectively), as well as borax.[12] Of those, lithium is arguably most important as it is a vital component of many electric batteries. With estimated 9 000 000 t, Bolivia holds about 43 % of the world's known lithium reserves;[13] most of those are in the Salar de Uyuni.[citation needed]

Lithium is concentrated in the brine under the salt crust at a relatively high concentration of about 0.3 %. It is also present in the top layers of the porous halite body lying under the brine; however, the liquid brine is easier to extract, by boring into the crust and pumping out the brine.[14] The brine distribution has been monitored by the Landsat satellite and confirmed in ground drilling tests. Following those findings, an American-based international corporation has invested $137 million to developing lithium extraction.[15] However, lithium extraction in the 1980s and 1990s by foreign companies met strong opposition from the local community. Locals believed that the money infused by mining would not reach them. [16]

No mining plant is currently at the site, and the Bolivian government does not want to allow exploitation by foreign corporations. Instead, it intends to build its own pilot plant with a modest annual production of 1 200 t of lithium and to increase it to 30 000 t by 2012.[17]

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. All miners working in the Salar belong to Colchani's cooperative.[citation needed]

Because of its location, large area, and flatness, the Salar is a major car transport route across the Bolivian Altiplano,[9] except when seasonally covered with water.[citation needed]

Name

Salar is salt flat in Spanish. Uyuni originates from the Aymara language and means a pen (enclosure); Uyuni is a surname and the name of a town that serves as a gateway for tourists visiting the Salar. Thus Salar de Uyuni can be loosely translated as a salt flat with enclosures, the latter possibly referring to the "islands" of the Salar; or as "salt-flat at Uyuni (the town named 'pen for animals')".[citation needed]

Aymara legend tells that the mountains Tunupa, Kusku, and Kusina, which surround the Salar, were giant people. Tunupa married Kusku, but Kusku ran away from her with Kusina. Grieving Tunupa started to cry while breastfeeding her son. Her tears mixed with milk and formed the Salar. Many locals consider the Tunupa an important deity and say that the place should be called Salar de Tunupa rather than Salar de Uyuni.[12]

Flora and fauna

The Salar is virtually devoid of any wildlife or vegetation. The latter is dominated by giant cacti (Echinopsis atacamensis pasacana, Echinopsis tarijensis, etc.). They grow at a rate of about 1 cm/a to a height of about 12 m. Other shrubs include Pilaya, which is used by locals to cure catarrh, and Thola (Baccharis dracunculifolia), which is burned as a fuel. Also present are quinoa plants and queñua bushes.[12]

Every November, Salar de Uyuni is the breeding ground for three species of pink South American flamingo: the Chilean, Andean, and rare James's flamingos, their color presumably originating from feeding on pink algae. About 80 other bird species are present, including the horned coot, Andean goose, and Andean hillstar. The Andean fox, or culpeo, is also present, and islands in the Salar (in particular Incahuasi Island) host colonies of rabbit-like viscachas.[12]

Tourism

Hotels

Traditional salt production at Salar. Such salt blocks are used for building salt hotels.
See also: Palacio de Sal

Salar de Uyuni attracts tourists from around the world. As it is far from the cities, a number of hotels have been built in the area. Due to lack of conventional construction materials, many of them are almost entirely (walls, roof, furniture) built with salt blocks cut from the Salar. The first such hotel, named Palacio de Sal, was erected in 1993–1995[18][19] in the middle of the salt flat,[20][21] and soon became a popular tourist destination.[22] However, its location in the center of a desert caused sanitation problems, as most waste had to be collected manually. Mismanagement caused serious environmental pollution and the hotel had to be dismantled in 2002.[23][24]

Train cemetery

One major tourist attraction is an antique train cemetery. It is 3 km outside Uyuni and is connected to it by the old train tracks. The town served in the past as a distribution hub for the trains carrying minerals en route to Pacific Ocean ports. The rail lines were built by British engineers arriving near the end of the 19th century and formed a sizeable community in Uyuni. The engineers were invited by the British-sponsored Antofagasta and Bolivia Railway Companies, now Ferrocarril de Antofagasta a Bolivia. The rail construction started in 1888 and ended in 1892. It was encouraged by Bolivian President Aniceto Arce, who believed Bolivia would flourish with a good transport system, but it was also constantly sabotaged by the local Aymara indigenous Indians who saw it as an intrusion into their lives. The trains were mostly used by the mining companies. In the 1940s, the mining industry collapsed, partly because of mineral depletion. Many trains were abandoned, producing the train cemetery. There are proposals to build a museum from the cemetery.[12]

Cemetery of trains near the town of Uyuni.

Satellite calibration

Dried surface of the Salar.

Salt flats are ideal for calibrating the distance measurement equipment of satellites because they are large, stable surfaces with strong reflection, similar to that of ice sheets. As the largest salt flat on Earth, Salar de Uyuni is especially suitable for this purpose. In the low-rain period from April to November, due to the absence of industry and its high elevation, the skies above Salar de Uyuni are very clear, and the air is dry (relative humidity is about 30 %; rainfall is roughly 1 millimetre or 0.039 inches per month). It has a stable surface, smoothed by seasonal flooding — water dissolves the salt surface and thus keeps it leveled.[citation needed]

As a result, the variation in the surface elevation over the 10,582-square-kilometer (4,086 sq mi) area of Salar de Uyuni is less than 1 meter (3 ft 3 in) normal to the Earth's circumference, and there are few square kilometers on Earth that are as flat. The surface reflectivity (albedo) for ultraviolet light is relatively high at 0.69 and shows variations of only a few percent during the daytime.[7] The combination of all these features makes Salar de Uyuni about five times better for satellite calibration than the surface of an ocean.[5][6][25] Using Salar de Uyuni as the target, ICESat has already achieved the short-term elevation measurement accuracy of below 2 centimeters (0.79 in).[26]

With the use of modern GPS technology, it can now be proven that the Salar de Uyuni is not perfectly flat. New measurements revealed previously missed features resembling ridges, hills, and valleys only millimeters in height. They originate from the variation in material density, and thus the gravitational force, beneath the Salar's sediments. Just as the ocean surface rises over denser seamounts, the salt flat surface also rises and falls to reflect the subsurface density variations.[25][27]

Panoramic view of the Salar.
  • Salar de Uyuni 2013
    Salar de Uyuni 2013
  • Sunset at the Salar de Uyuni
    Sunset at the Salar de Uyuni
  • Piles of salt at the Salar
    Piles of salt at the Salar
  • Llamas in the Salar
    Llamas in the Salar
  • The Salar covered with water
    The Salar covered with water
  • Small patch covered with water during winter
    Small patch covered with water during winter
  • A Taiwanese monk at the Salar during winter
    A Taiwanese monk at the Salar during winter
  • Mountains and jeeps near Salar De Uyuni 2017
    Mountains and jeeps near Salar De Uyuni 2017

See also

References

  1. ^ "Salar de Tunupa". Iris en Tore op reis. 29 July 2011. Retrieved 2016-02-26.
  2. ^ "Uyuni Salt Flat". Encyclopædia Britannica. Retrieved 2007-12-01.
  3. ^ Keating, Joshua (2009-10-21). "Bolivia's Lithium-Powered Future: What the global battery boom means for the future of South America's poorest country". Foreign Policy.
  4. ^ Borsa, A. A; et al. (2002). "GPS Survey of the salar de Uyuni, Bolivia, for Satellite Altimeter Calibration". American Geophysical Union, Fall Meeting.
  5. ^ a b Hand, Eric (2007-11-30). "The salt flat with curious curves". Nature.
  6. ^ a b Fricker, H. A. (2005). "Assessment of ICESat performance at the salar de Uyuni, Bolivia" (PDF). Geophysical Research Letters. 32 (21): L21S06. Bibcode:2005GeoRL..3221S06F. doi:10.1029/2005GL023423. Archived from the original (free download pdf) on 2009-03-20. {{cite journal}}: Unknown parameter |deadurl= ignored (|url-status= suggested) (help)
  7. ^ a b Reuder, Joachim; et al. (2007). "Investigations on the effect of high surface albedo on erythemally effective UV irradiance: Results of a campaign at the Salar de Uyuni, Bolivia" (PDF). Journal of Photochemistry and Photobiology B. 87 (1): 1–8. doi:10.1016/j.jphotobiol.2006.12.002. PMID 17227712. Archived from the original (free-download pdf) on 2014-04-14. {{cite journal}}: Unknown parameter |deadurl= ignored (|url-status= suggested) (help)
  8. ^ a b Lamparelli, R. A. C.; et al. (2003). "Characterization of the Salar de Uyuni for in-orbit satellite calibration". IEEE Trans. Geosci. Remote Sens. 41 (6): 1461–1468. Bibcode:2003ITGRS..41.1461C. doi:10.1109/TGRS.2003.810713.
  9. ^ a b "Salar de Uyuni, Bolivia". NASA Earth Observatory. Retrieved 2007-12-01.
  10. ^ Bowman, Isaiah (1914). "Results of an Expedition to the Central Andes". Bulletin of the American Geographical Society. 46 (3): 161. JSTOR 201641.
  11. ^ Baker, P. A.; et al. (2001). "Tropical climate changes at millennial and orbital timescales on the Bolivian Altiplano". Nature. 409 (6821): 698–701. doi:10.1038/35055524. PMID 11217855.
  12. ^ a b c d e f Atkinson, David (2007-03-01). Bolivia: The Bradt Travel Guide. Bradt Travel Guides. pp. 170, 174–176. ISBN 978-1-84162-165-4.
  13. ^ "Lithium Statistics and Information" (PDF). USGS.
  14. ^ "In search of Lithium: The battle for the 3rd element". Dailymail. 5 April 2009.
  15. ^ National Research Council (U.S.). Board on Science and Technology for International Development, National Research Council (U.S.). Office of International Affairs (1988). Science and technology for development: prospects entering the twenty-first century : a symposium in commemoration of the twenty-fifth anniversary of the U.S. Agency for International Development. National Academies. p. 60.
  16. ^ "Bolivia holds key to electric car future". BBC News.
  17. ^ "Bolivia holds key to electric car future". BBC. 2008-11-09.
  18. ^ "Bolivian Hotel Truly Is the Salt of the Earth". hotelchatter.com. January 27, 2009.
  19. ^ "Don't Lick the Walls of the Salt Hotel". tripcrazed.com. 19 May 2009.
  20. ^ McFarrren, Peter (1999-03-04). "Salt hotel has a rule: No licking". The Associated Press.
  21. ^ Box, Ben; Kunstaetter, Robert; Kunstaetter, Daisy; Groesbeck, Geoffrey (2007). Peru, Bolivia & Ecuador. Footprint Travel Guides. p. 378. ISBN 1-906098-06-9.
  22. ^ "Photo in the News: New Salt Hotel Built in Bolivia". National Geographic. 2007-07-25. Retrieved 2009-09-01.
  23. ^ Adès, Harry (2004). The Rough Guide to South America. Rough Guides. p. 259. ISBN 1-85828-907-6.
  24. ^ "Palacio del Sal". hbernreuther.de (in German).
  25. ^ a b "The Hills And Valleys Of Earth's Largest Salt Flat". GPS Daily. 2007-11-29.
  26. ^ Spreen, Gunnar (2008). Satellite-based Estimates of Sea Ice Volume Flux: Applications to the Fram Strait Region. GRIN Verlag. p. 22. ISBN 3-640-13064-2.
  27. ^ Bills, Bruce G.; et al. (2007). "MISR-based passive optical bathymetry from orbit with few-cm level of accuracy on the Salar de Uyuni, Bolivia". Remote Sensing of Environment. 107 (1–2): 240–255. doi:10.1016/j.rse.2006.11.006.

Bibliography

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