Tria Region is one of the thirteen regions surrounding Radiata City. It is connected to the city by the Echidna Gate to the east. To the north lies to Nowem Region, where the dark elves live. Solieu Village, which the protagonist, Jack Russell, is from, lies to the far west of this region, with Tria Village slightly to the north of it. A part of the Dwarf Tunnels comes out in this region, between Solieu Village and Tria Village.