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Lençóis Maranhenses: Brazil’s sweeping dunes

10 Sep 2026

After a day in the sun, you could be forgiven for thinking this magical expanse of sand and water is a mirage.

Stretching across 1500 square kilometres of Brazil’s tropical north-east coast, Lençóis Maranhenses comprises a series of blue-green pools that ripple through crescent-shaped dunes like strokes of ink on parchment. Known as the ‘bedsheets of Maranhão’ (named after the state of the same name), the national park is a sight to behold.

Footprints winding across sand dunes beside a lagoon at sunset in Lençóis Maranhenses.
Two travellers running down white sand dunes beside a lagoon in Lençóis Maranhenses, Brazil.

When it rains (from January to June) water fills the valleys and crevices up to three metres deep, held fast by watertight rock beneath the sand.

The lagoons are at their peak between July and September and tours run regularly from São Luís, the capital of Maranhão, and from Barreirinhas, just outside the national park. Bring your togs and prepare for a memorable swim.

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Traveller jumping from a white sand dune above a turquoise lagoon in Lençóis Maranhenses.

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