Kuikuro
The Kuikuro were a Cariban-speaking Indigenous people of the upper Xingu in present-day Brazil. They were likely descendants of the inhabitants of Kuhikugu, a network of settlements in the region.
Around 1400 upper Xingu villages had palisades and gates, with roads and bridges linking settlements. At Kuhikugu some communities also had defensive ditches and large plazas. The settlements remained inhabited until around the seventeenth century, when diseases brought by Europeans may have killed their inhabitants.