Anavilhanas
Anavilhanas National Park On The Rio Negro, One Of The Largest Freshwater Archipelagos In The World; Part Of The Central Amazon Conservation Complex UNESCO World Heritage Site · Novo Airão, Amazonas
Anavilhanas is a maze of several hundred forested islands in the Rio Negro, upriver from Manaus, often counted among the largest freshwater archipelagos in the world. It was protected in 1981 and is now a national park and part of the Central Amazon Conservation Complex, a UNESCO World Heritage Site. The river here is black water, stained dark by the forest, and it changes the place completely through the year. At high water the islands flood and boats slip between the tree trunks of the igapó forest; at low water long white sand beaches appear along the channels. The gateway is Novo Airão, a small river town about three hours by road from Manaus across the Rio Negro bridge, with pousadas, boat operators and lodges nearby. The town is also known for a floating platform where visitors watch pink river dolphins being fed, a popular stop that is regulated but still debated because feeding changes wild behaviour. Visits are by boat with licensed operators or from lodges, and cruises from Manaus pass through. It is quieter and more remote-feeling than the lakes close to the city.
Parque Nacional de Anavilhanas, Novo Airão, AM, Novo Airão, Amazonas, Brazil
The park has no gate or daily opening hours; it is a river, and it is visited by boat whenever operators run, which is mostly in daylight. Trips from Novo Airão and the lodges usually leave early in the morning, when birds are active and the heat is lower, and again in the late afternoon for sunset and dolphin sightings; some lodges add night trips for caimans. Tourist visits inside the park follow federal rules and go with licensed operators, and some areas are closed to visitors - confirm current rules locally. The dolphin platform in Novo Airão opens for set sessions in the daytime and limits numbers, and it may close on some days - confirm on arrival. The river sets the season: high water, peaking around June, floods the islands and opens canoe routes through the forest, while low water, roughly September to December, exposes the beaches and makes some shallow channels hard for boats. Severe drought years have left channels unusable for weeks and stranded boats, so check river levels before booking. The road from Manaus is open all year but slow in heavy rain, and lodge transfers run on set days, so match them to flights.