Central Amazon Conservation Complex (CACC) - A Tourist’s Guide

Six million hectares is a hard number to picture, so try this instead: the Central Amazon Conservation Complex is roughly the size of Croatia, and it is the single largest protected area anywhere in the Amazon basin. It sits at the meeting point of the Solimões and Japurá rivers in the state of Amazonas, not the Lábrea municipality some older guides claim, and it did not spring into existence as a single park. It grew. Jaú National Park was inscribed on its own in 2000, then in 2003 UNESCO folded in Anavilhanas National Park, the Amanã Sustainable Development Reserve, and the Mamirauá Sustainable Development Reserve to form the complex that exists today. Those four components, not the invented “extractive reserves” and macaw parks you’ll find in some AI-written travel copy, are the actual pieces of this UNESCO site.

What is actually here

Mamirauá Sustainable Development Reserve is the most visitable component and the one most tourists mean when they say they’re “going to the CACC.” It protects várzea, seasonally flooded forest that can rise ten meters during the wet season, and it’s the best place in the world to reliably see both pink river dolphins (boto) and the endangered white uakari monkey, the bald, scarlet-faced primate the reserve is named for.

Amanã Sustainable Development Reserve sits between Mamirauá and Jaú, forming an ecological corridor rather than a tourist destination in its own right. Almost nobody visits it directly; its value is as a buffer that keeps the whole complex connected.

Jaú National Park, at well over 2 million hectares, is the anchor and the oldest-protected piece, dominated by terra firme forest that doesn’t flood, plus igapó forest that does.

Anavilhanas National Park protects the second-largest freshwater archipelago on the planet, hundreds of river islands scattered across the Rio Negro that appear and disappear with the water level.

Getting there and where to stay

Fly from Manaus to Tefé, a short domestic hop, then take a speedboat across the Solimões River to reach the Mamirauá reserve; the crossing itself takes under an hour once you’re on the water. Most visitors base themselves at the Uakari Lodge, a floating lodge on an oxbow lake inside Mamirauá that is run as a community-based tourism project with local ribeirinho families rather than a standard hotel chain. Arrivals and departures run on a fixed Monday and Friday schedule, so you build your trip around those two days, not whenever you feel like showing up. Expect to pay well over a thousand dollars per night for a multi-day package including meals, guides, and boat excursions; this is not a budget stop, and that cost is part of what keeps visitor numbers low enough for the wildlife to stay undisturbed.

Anavilhanas is easier logistically since it’s reached directly from Manaus by road and boat along the Rio Negro, making it a realistic day or overnight trip for people who don’t have the time or budget for the full Mamirauá experience. Jaú and Amanã have essentially no tourist infrastructure and are visited mainly by researchers.

The fact most guides skip

The 2003 expansion wasn’t just a paperwork exercise, it created one of the only places on Earth where a UNESCO natural site is managed jointly with sustainable-use reserves where thousands of people actually live and fish for a living. Mamirauá pioneered a community-based pirarucu (arapaima) fishery management system that other Amazonian reserves have since copied, because it proved that a community could out-earn illegal fishing by managing stocks sustainably instead. In 2025, the Mamirauá Institute and a Spanish acoustics lab finished installing 22 bioacoustic sensors through the reserve, using AI to identify species by sound and track biodiversity in real time, a level of environmental monitoring most protected areas in the world still don’t have.

Best time to visit

The dry season, roughly July through October, is when trails and igapó forest floors are walkable and wildlife concentrates around shrinking water bodies, making sightings easier. The flood season, especially at its peak around May and June, is when Mamirauá is at its most photogenic and the canoe access into the flooded forest canopy is unlike anything else in South America, but you’ll be doing everything from a boat. I’d pick flood season if the trip is really about the várzea experience and dry season if you want to combine it with more overland wildlife tracking in Jaú.

Practical notes

Bring a local guide always, both parks and reserves require it and freelancing here is genuinely dangerous given venomous snakes, caimans, and simply how easy it is to get lost. Mosquito-borne illness precautions matter here more than almost anywhere else in Brazil; long sleeves, repellent with DEET, and a look at your vaccination and antimalarial status before you fly are not optional extras. Book the Uakari Lodge months ahead, capacity is deliberately small and the Monday/Friday transfer schedule means missing your slot can cost you a full week, not a day.