Mystery Wonders
Lencois Maranhenses sand dunes

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A Sea of Dunes Conjured by wind and water, a magical sandscape on the northeastern coast of Brazil is no mirage. Seen from the air, the dunes look like white linens hung out to dry on a windy afternoon. In fact, the name of this place, Lençóis Maranhenses, means the "bedsheets of Maranhão," the state in Brazil on the tropical northeastern coast where the half-moon-shaped dunes are found. By any name it is a magical desert, with wave after wave of shimmering white sand. Shoals of silvery fish swim in brilliant blue and green pools left behind by the rains. Shepherds lead caravans of goats over towering dunes. And fishermen head out to sea, guided only by the stars and the ghosts of old shipwrecks.


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"It feels like a parallel world," says Carolina Alvite, former director of the 600-square-mile national park created three decades ago to protect this unlikely ecosystem. It's as if the sea near the Bahamas suddenly appeared like a mirage in the middle of the Sahara. Only in this desert the mirage is real. Actually, by the most technical of standards, the Lençóis isn't really a desert, says Antonio Cordeiro Feitosa, a geographer at the Federal University of Maranhão. Forty-seven inches or so of rain fall on the region a year. By definition, a desert averages fewer than ten inches a year. And it is the presence of water that makes the sandscape possible. Two nearby rivers, the Parnaíba and Preguiças, carry sand from the interior of the continent to the Atlantic, where ocean currents push them westward. Much of the sediment is deposited along the park's 44-mile-long shoreline. Here, during the dry season, especially in October and November, a relentless northeasterly wind drives the sand as far as 30 miles inland, sculpting crescent-shaped dunes up to 130 feet high as far as the eye can see. Cordeiro's eye also sees the perpetual motion of Lençóis Maranhenses. In places these dunes may advance by as much as 65 feet a year. "The landscape is radically transformed by each seasonal cycle," he says. Lagoons are born anew each year after the January-to-June rains fill the valleys between the dunes. Some of these temporary bodies of water are more than 300 feet long and up to ten feet deep. In early July, at their fullest, the lagoons can become interconnected when rivers, such as the Rio Negro, cut through the dunes. So fish have a route to migrate into the lagoons, where they feed on other fish or the larvae of insects buried in the sand. A few fish species, such as the wolffish (Hoplias malabaricus), even spend the dry season dormant in the mud, emerging when the showers return. Once the rainy season ends, the lagoons begin to evaporate in the equatorial heat; their water level may drop by as much as three feet a month. Fish and bugs aren't the only residents. Besides people living in villages around the dunes, 90 men, women, and children inhabit two oases in the dunes, Queimada dos Britos and Baixa Grande, where they dwell in palm-roofed mud huts. Like the dunes, they change their routines with the seasons. In the dry season they raise chickens, goats, and cattle, grow cassava, beans, and cashews, and collect buriti and carnauba palm fibers from the restinga, or coastal vegetation, that grows near the dunes. When the rains come and planting becomes more difficult, people in the oases head for the sea, where they live in fishing camps on the beach. There they sell salted and dried Atlantic tarpon and other fish to traders, who sell them in the cities.




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Timbuktu
Leaning Tower of Pisa
Temple of Artemis at Ephesus
Vimana Flying Machine
K2 Pakistan
Memnon Colossi
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The Great Wall of China
Mount Nemrut
Ancient Atomic Bomb India
Sahara Desert
Stone Forest
Waterfalls Rio Tulija
Fly Geyser
Statue of Zeus at Olympia
Red Rain
The Wonder Cave
Lencois Mranhenses Brasil
Aurora
Bermuda Triangle
Twin Town
Largest Crab Ever
El Chupacabra
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Mount Rushmore
Rio de Janeiro
Underwater Museum Cancún Mexico
Columnar Basalt
Kittiwake Shipwreck
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Victoria Falls
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Taj Mahal
Arizona Wave
Pompeii After Eruption
Zhangye Danxia
Tunguska Explosion Russia
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Colosseum Rome Italy
Iron Pillar Delhi
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Valley of Love Ireland
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