Sunset On The River Preguiça Royalty-Free Stock Photography

In June / 2016, I made a trip to the Lençóis Maranheses, a unique ecosystem on the planet, in the state of Maranhão in the northern region of Brazil. The Lençois Maranhenses are composed of large, white, sweeping dunes, at first glance, Lençóis Maranhenses, looks like an archetypal desert, but in fact it is not an actual one. The rains cause a peculiar phenomenon: fresh water collects in the valleys between sand dunes and is prevented from percolating down by a layer of impermeable rock which lies underneath the sand. The resulting blue, green and black `lagoons` are surrounded by the desert-like sand, and reach their fullest between June and September.