Acroas

The Acroá were an Indigenous people of the Brazilian interior, associated with the country between the Tocantins and the headwaters farther east. During the eighteenth century colonial gold-seeking expeditions and missions entered their lands. Some Acroá were gathered into mission settlements, including São José do Duro, while others resisted the advance of colonists and the disruption of their communities.

The later city of Palmas lies nearby.