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Record #00153Nature archive

World's Largest Salt Flat by Area

Salar de Uyuni in Bolivia is the world's largest salt flat. NASA reports that its salt crust covers about 10,000 square kilometers.

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Last updated
2026-09-29
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about10,000km²

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Overview

Archive Note

Salar de Uyuni lies on the high plateau of southwestern Bolivia and is a large natural salt flat.

NASA Earth Observatory explicitly identifies Salar de Uyuni as the world's largest salt flat, with a salt crust covering about 10,000 square kilometers.

A NASA technical report gives an area of about 9,800 square kilometers, consistent with the rounded 10,000-square-kilometer figure.

Key information

Area
about 10,000 km²
Location
Potosí Department, Bolivia
Landform type
Salt flat (salar)

Record history

1 Milestones
  1. —about 10,000 km²Salar de UyuniSalar de Uyuni, Potosí Department, BoliviaCurrent Record

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Verified

The record conclusion has sufficient verification support.

Verification explanation pending

Last editorial review
2026-09-29

Current Entry identifies the current entry in this archive; it does not establish that the record is still held today.

Source IDSourcePublisherLink
SRC-001A Salt Bath in BoliviaOfficialENCurrent recordNASA Earth ObservatorySRC-002Topography of the Flattest Surface on Earth: using ICESAT, GPS, and MISR to Measure Salt Surface Topography on Salar de Uyuni, BoliviaAcademicENCurrent recordNASA Technical Reports Server

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ARCHIVE VISUAL / 01

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Salar de Uyuni
  1. /
  2. /World's Largest Salt Flat by Area

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Salar de Uyuni
Potosí Department
Bolivia
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