A full-day 4x4 adventure from Barreirinhas to Santo Amaro that crosses sand tracks, visits deep crystal lagoons, includes lunch in Betânia and ends at a dune-top sunset. Ideal between May and September when lagoons are fullest.
More ways to explore the area's outdoor wonders
You climb into a 4x4 as the van drops you at the edge of a vast white sea. The vehicle buckles over sandy tracks, dunes rising and falling like slow waves; the guide points toward a rim and, beyond it, a pocket of turquoise water that seems to dare you to jump in.
Difficulty
moderate
Duration
10–12 hours
Fitness Level
Suitable for travelers in average fitness; expect repeated sand walking, getting in/out of 4x4s, and hour-long heat exposure.
Wildlife
History
The dunes formed over centuries as coastal sediments were transported inland by wind, while local communities developed fishing and small-scale agriculture adapted to seasonal floods.
Conservation
Lençóis Maranhenses is a federally protected park managed by ICMBio; visitors should follow guidance, avoid disturbing wildlife and pack out waste to minimize impact.
Reserve your spot on the Santo Amaro Lençóis Tour from Barreirinhas today and enjoy a trusted, highly rated experience designed to help you make the most of your adventure.
Bring plenty of water
Carry at least 2 liters per person in a refillable bottle—the sun and sand drain energy fast.
Sun protection is crucial
Use high-SPF, reef-safe sunscreen, a wide-brim hat and UV sunglasses to avoid overexposure on white sand.
Wear appropriate footwear
Sturdy sandals or lightweight hiking shoes help when walking on hot or shifting sand and short trails to lagoons.
Respect park rules
Keep to guided routes, don’t bring alcohol into park areas, and take all trash back to Barreirinhas.
Refillable water bottle (1–2 L)
Hydration is critical during long sun exposure and sand crossings.
Quick-dry swimwear & towel
Lagoons invite swimming—bring items that dry fast for the return ride.
summer
Sunscreen (reef-safe) & hat
Protects skin and eyes from intense reflected sunlight off white dunes.
Sturdy sandals or lightweight hiking shoes
Provides traction and comfort on hot, shifting sand and short walks.