Salar de Uyuni - Bolivia

My one and only Bolivian postcard was sent to me by a Bolivian Virtual Tourist friend, Marcelo. The card shows the world's largest salt flat. It is in Uyuni, Bolivia. It is really hard to believe that all the whiteness on the card is nothing but salt. We have a salt lake in Turkey but it is getting smaller day by day. I wish we cared more about what Mother Nature offers us...