Potosí is a department in southwestern Bolivia. It comprises 118,218 km2 with 823,517 inhabitants. The capital is the city of Potosí. It is mostly a barren, mountainous region with one large plateau to the west, where the largest salt flat in the world, Salar de Uyuni, is located.

Aymara is an Aymaran language spoken by the Aymara people of the Bolivian Andes. It is one of only a handful of Native American languages with over one million speakers. Aymara, along with Spanish and Quechua, is an official language in Bolivia and Peru. It is also spoken, to a much lesser extent, by some communities in northern Chile, where it is a recognized minority language.