Bring sunglasses for this spectacular salt plain in a remote part of the puna, some 3350m above sea level. A lake that dried up in the Holocene, this is now a 525-sq-km crust of salt up to 0.5m thick. On a clear day, the blinding contrast between bright blue sky and the cracked and crusty expanse of white is spellbinding. Over the course of a year, wind strips much of the salt away; it's most spectacular after summer rains replenish it.
The salinas are impressive, and make a terrific all-natural green screen if you care to stage hilarious photo shoots for your Instagram feed. However, the otherworldly salares of southwestern Bolivia are even better, and if you’re heading that way (or have already been), you might prioritize other attractions.