1 day tour Uyuni salt flats: During a short stay you can still visit the amazing salar de Uyuni, a full day trip is possible. Salar de Uyuni is the world’s largest salt flat. With 10.582 square kilometers, the vast white expanse of the Salar de Uyuni can be seen from space. The astronaut Neil Armstrong is said to have mistaken it for a glacier when he was standing on the Moon. Explore the Uyuni salt flats on a guided tour from Uyuni. Visit the train cemetery and the village of Colchani, and enjoy a sumptuous lunch in the middle of the salt flats.