The Salar de Uyuni in southern Bolivia is the world’s largest salt flat at almost 5000 square miles. In all that area, its height above sea level only varies by three feet — so nearly perfectly level that NASA uses it as a benchmark to align some of their equipment in space! This whole area is unique with many geologic features — check out the links below to find out more and see awesome pics!

salar de uyuni salt flat largest world bolivia south america desert altiplano unusual places

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