Description:See the Brazilian sand dunes and lagoons known as Lençóis Maranhenses. Sand dunes are beautiful, natural wonders. Some of them really stand out.You'll find them at Lençóis Maranhenses in northeastern Brazil.There are many mounds of pale sand, yet there are also pools of turquoise speckled waters. Although it is certainly visually appealing, those water pools are lagoons, which make the site exceptionally rare in regards to the location of the accompanying sand dunes.(1:10)