Delight in 3 days of activities and discover the Lençóis Maranhenses National Park, a stunning region formed by the contrast between dunes and natural lagoons created by rainwater during the rainy season. Enter this huge oasis from the gateway town of Barreirinhas, and marvel at the scenic beauty of the lagoons that attract visitors from all over the world. Day 1 Depart from your hotel in São Luis or the SLZ-Marechal Cunha Machado International Airport for flights arriving before 6:30 AM. Arrive in Barreirinhas, and depart around 2 PM in a 4x4 vehicle to cross the ferry. Then, take a trail to get to the Lençois Maranhenses, admire the dunes, and refresh with some swimming in the clear blue lagoons. After watching the amazing sunset at the top of the dune, return to Barreirinhas. Day 2 Depart around 8 AM in a 4×4 vehicle and start the 1.5-hour drive to Atins. Upon arrival, enjoy a short walk to visit some natural lagoons formed by rainwater. Take the opportunity to dive into the clear waters of the lagoon and snap some beautiful photos. Next, be amazed by the meeting of the Preguiças River and the sea at Atins Beach. Enjoy some free time to swim and relax on the sand. Stop for lunch at a local restaurant (not included in the tour price) famous for grilled shrimp. After lunch, spend some time resting and relaxing in hammocks before returning to Barreirinhas. Day 3 Depart around 8 AM on a speedboat tour of Preguiças River, a calm river with lots of different typical trees and palms on its margins. Make your first stop in Vassouras village at the limit of the dunes, where it's possible to interact with the monkeys, have some coconut water, and buy some local art. The next stop will be at the village of Mandacaru. Here, see and climb a lighthouse to have a panoramic view of the region, the park, the river, and the sea. Make your last stop in Caburé village, an arm of sand having the river on one side, and the sea on the other. Enjoy free time to have lunch and swim in the river or the sea. Finally, transfer to your hotel in São Luis or the SLZ-Marechal Cunha Machado International Airport for flights departing after 11:00 PM.