Lencois maranhenses dunes pools

The interdunal lagoons of Lençóis Maranhenses create one of the most unique landscapes on Earth, where white dunes and crystal-clear waters meet.

About this subject

Lençóis Maranhenses, located in the state of Maranhão, northeastern Brazil, hosts a rare natural phenomenon: freshwater lagoons that form between the dunes during the rainy season, from January to June. The national park, created in 1981, spans about 1,550 km², with dunes reaching up to 40 meters in height. Lagoons such as Lagoa Azul and Lagoa Bonita appear when rainwater accumulates in depressions between the dunes, creating a striking contrast with the white, fine sand. This ecosystem is seasonal: during the dry season, many lagoons evaporate, but some remain year-round. The region also serves as habitat for fish and migratory birds that find temporary shelter in these waters. Beyond its scenic beauty, Lençóis Maranhenses holds cultural importance for local communities, such as fishermen and farmers living nearby. Tourism in the area has grown significantly, with visitors from around the world seeking experiences like hiking the dunes and swimming in the lagoons. Preserving the park is crucial to maintaining this natural heritage, which faces threats from urban expansion and climate change.

Frequently Asked Questions

What is the best time to visit Lençóis Maranhenses?

The best time is between May and September, when the lagoons are full and the weather is milder. The rainy season from January to June creates the lagoons.

How to get to Lençóis Maranhenses?

The main access is through the town of Barreirinhas, about 250 km from São Luís. From São Luís, you can go by car, bus, or flight to Barreirinhas, and then hire 4x4 or boat tours.

Is it safe to swim in the lagoons of Lençóis Maranhenses?

Yes, most lagoons have calm, shallow waters ideal for swimming. However, it's important to follow guides' instructions and avoid lagoons with unknown depth.