Araguaia

The upper Araguaia runs through the savanna and forest country of central Brazil, forming a long northward corridor between the Tocantins basin and the Amazon frontier. Its broad valley alternates between seasonal floodplain, gallery forest and dry upland. Fish, turtles, fruit and game gathered around the river, while its sandbars and channels changed the routes available from one season to the next.

Indigenous peoples including the Karajá, Xerente, Xavante, Apinajé and Avá-Canoeiro lived across the Araguaia valley. Karajá villages lined the river and used its fisheries, while other groups occupied the forests and plateaus between major channels. Exchange moved along waterways and footpaths, carrying food, ornaments, tools and knowledge between communities rather than following a single political center.

Portuguese expeditions entered the interior during the seventeenth and eighteenth centuries in search of Indigenous labor, minerals and a route between Goiás and the Amazon. Missions, forts and river navigation slowly extended colonial authority, but many communities withdrew into less accessible country. The river remained a corridor of canoes and seasonal camps, where Indigenous geography continued to shape travel and settlement.