The Twelve Duns is an overlapping region within the Barrier. The region is also the location for the southeast city of Rhi'ornin, a home of the Trow. A long time ago, the Duns were inhabited by northern barbaric tribes of nomadic people who were driven away from their old homes by the Myrkridia. The people eventually stumbled upon an age-old shine that contained scrolls, and it was from these scrolls that they learned the ancient ways of battle. They worshiped the deeds of their ancestors who fought back against the Myrkridia to protect their homeland.
During the Wind Age, the clans of the Twelve Duns fell to the might of Moagim's dark army. Ravanna, aided by Damas, led the escape of thousands of refugees, and forged an alliance between the Duns, Gower, and Llancarfan.