Салар-де-Уюни is the world's largest salt flat, located in Bolivia. Covering over 10,000 square kilometers, it was formed from the evaporation of ancient lakes. The flat is primarily composed of sodium chloride, giving it a bright white appearance, especially during the dry season. During the rainy season, a thin layer of water covers the salt, creating a stunning mirror effect that reflects the sky. This unique landscape attracts tourists and photographers, making it a popular destination for those seeking to experience its breathtaking beauty and vastness.