Lençóis Maranhenses National Park is absolutely unique.
More than half of its area consists of a white coastal dune field containing hundreds of sparkling, freshwater lagoons. Its beauty and rarity is such that UNESCO has declared the park, located in northern Brazil, a World Heritage Site. But how does a remote desert wilderness sustain such large volumes of water, and why is this precious ecosystem worth visiting?
Click on and travel to this incredible national park to find out.