The third largest in area, located in the western part of the country.Neighboring states are Rondônia, Amazonas, Pará, Tocantins, Goiás and Mato Grosso do Sul. It also borders Bolivia to the southwest. A state with a flat landscape, alternating great chapadas and plain areas, Mato Grosso presents three different ecosystems: Cerrado, Pantanal and the Amazon Rainforest. The vegetation of the open pasture covers 40% of the state, and the Chapada dos Guimarães National Park, with its caves, grottos, tracks and waterfalls, is one of its great tourist attractions. In the north is the Amazonian forest, with a biodiversity covering half of the state. The Xingu National Park and the Araguaia River are in Mato Grosso. Further south, the Pantanal, the world's largest wetland, is the habitat for almost a thousand species of animals, with many aquatic birds.