Ouachita Mountains

The Ouachita Mountains extend westward from Arkansas into eastern Oklahoma, their wooded ridges running chiefly from east to west. Streams cut through the folded hills and feed the Arkansas and Red River systems. The Kiamichi River rises among these mountains and carries water southward to the Red River. Caddo communities in the surrounding valleys used the mountain country and its waterways as part of a wider network of settlements and exchange.