Qualla: Lençóis Maranhenses National Park

Lençóis Maranhenses National Park: Introduction

Fri, 04 Sep 2026 00:00:00 GMT

Photo credit Iain and Sarah from London, UK, CC BY 2.0. Once the rains stop, the lagoons drain upward. There is no outlet and no river to carry them away; the sun simply takes them, as much as a metre of depth a month, until the hollows between the dunes are dry white sand again and the fish that lived in them are gone. Then January comes, the rain returns, and roughly two-fifths of Lençóis Maranhenses National Park turns back into water. Nothing here is permanent except the arrangement that produces it: sand delivered by rivers, moved by wind, and sitting on a floor of rock that refuses to let the rain through.

Image: Iain and Sarah from London, UK | CC BY 2.0

Lençóis Maranhenses National Park: Delivered by River, Arranged by Wind

Fri, 04 Sep 2026 00:00:00 GMT

Photo credit Brazil_location_map.svg: NordNordWest derivative work: Виктор В (talk), CC BY-SA 3.0. The sand is not local. The Parnaíba and the Preguiças carry it down to the Atlantic coast of Maranhão, where the surf works it up onto the beach and the prevailing wind takes over, pushing it as far as fifty kilometres inland. The result is a dune belt running along seventy kilom...

Image: Brazil_location_map.svg: NordNordWest derivative work: Виктор В (talk) | CC BY-SA 3.0

Lençóis Maranhenses National Park: The Floor That Holds

Fri, 04 Sep 2026 00:00:00 GMT

Photo credit AUGUSTO PESSOA, CC BY-SA 3.0. Deserts, by the standard definition, receive under 250 millimetres of rain a year. This place gets about 1,200, roughly seventy percent of it between January and May, which disqualifies it from the category it so obviously resembles. What makes the lagoons possible is not the rai...

Image: AUGUSTO PESSOA | CC BY-SA 3.0

Lençóis Maranhenses National Park: Living on a Timer

Fri, 04 Sep 2026 00:00:00 GMT

Photo credit Ian Storni Machado, CC BY-SA 4.0. Surveys have recorded 133 plant species, 112 birds and at least 42 reptiles here, along with four threatened species: the scarlet ibis, the neotropical otter, the West Indian manatee and a small wild cat. The organism that best explains the place, though, is a fish. Hoplias malab...

Image: Ian Storni Machado | CC BY-SA 4.0

Lençóis Maranhenses National Park: Decree 86,060

Fri, 04 Sep 2026 00:00:00 GMT

Photo credit Lessa.danilo, CC BY-SA 4.0. Federal protection arrived on 2 June 1981, under Decree 86,060, covering roughly 155,000 hectares — Brazilian figures put the area at 156,584 — across the municipalities of Barreirinhas, Primeira Cruz and Santo Amaro do Maranhão. About 90,000 hectares of that is open, unvegetated...

Image: Lessa.danilo | CC BY-SA 4.0

Lençóis Maranhenses National Park: The Year the List Caught Up

Fri, 04 Sep 2026 00:00:00 GMT

Photo credit Patricia Turano, CC BY-SA 4.0. In July 2024, forty-three years after the decree, UNESCO inscribed Lençóis Maranhenses on the World Heritage list as a natural property, citing its exceptional beauty and the fact that the phenomenon it protects is found nowhere else on earth. The recognition ratified something t...

Image: Patricia Turano | CC BY-SA 4.0