The El Dorado waterfall, on the Aracá River, the largest waterfall in Brazil, plunges 353 meters high into the middle of the Amazon mountains. It is located in the Serra do Aracá State Park, 211 km in a straight line from Barcelos, seat of the municipality, in the far north of the state of Amazonas (northern region of Brazil) on the border with Venezuela and the Brazilian state of Roraima. The Serra do Aracá State Park, created in 1990, occupies an area of ??1,818,700 ha (18,187 km²), i.e 15% of the area of ??the municipality of Barcelos (the
Mount Roraima, located on the triple border between Brazil, Venezuela and Guyana, is a tepui, a plateau-shaped mountain delimited by cliffs that form impregnable vertical rock faces about 1,000 meters high. Mount Roraima, discovered by Europeans in 1595 during the Spanish and British colonization of this part of South America, remained unexplored until the end of the 19th century. The "crystal mountain" from which many waterfalls sprang was considered impossible to climb and was the subject of many legends and stories, notably serving the imagination of Sir Arthur Conan Doyle for his 1912 book "The Lost World" ,
The magnificent river archipelago of Anavilhanas with around 400 islands is a labyrinth of Amazon forests cut through by the dark color of the arms of the Rio Negro. It is located in the Amazon between the municipalities of Manaus and Nova Airão. The region is under the protection of the Anavilhanas National Park, a Brazilian nature conservation authority for the integral protection of nature, which is managed by the Chico Mendes Institute for the Conservation of Biodiversity (ICMBio), that in addition to the conservation of the forest also promotes scientific research and valorization of the park through environmental education
