About Uyuni: Uyuni is a town in Bolivia, within the department of Potosí, situated in the southwest of the country. This region remains agriculturally undeveloped due to the scarcity and high salinity of water here. The city also serves as a commercial and transportation artery between Bolivia and Chile, with immigration bureaus and customs authorities found here. Well-known tourist attractions include the train cemetery and the Salar de Uyuni salt flats.