Salar de Uyuni, the largest salt flat on earth, is so vast that its 10,582 kilometers of barren, salty crust can be reflected from space. Despite being surrounded by Andes, it’s also the flattest place on earth and sits at 3,660 meters (12,000 feet) above sea level. The grand white expanse was created between 30,000 and 42,000 years ago as the…