The Rio Araguaia is a major river in Brazil, flowing through the central part of the country. It is approximately 2,627 kilometers long and is a tributary of the Rio Tocantins. The river is known for its diverse ecosystems, including wetlands and forests, which support a variety of wildlife. The Araguaia is an important waterway for transportation and fishing, providing resources for local communities. It also plays a significant role in the region's agriculture, as its waters are used for irrigation. The river is a popular destination for eco-tourism, attracting visitors interested in its natural beauty and biodiversity.