Ivinia
Go one Regional-Map–sized area east of Hârn and then one north; that's where Ivinia (Ivínia) is. Many viking realms claim portions of the Isle of Ivae and the many surrounding islands. From there, those peoples have raided and conquered portions of the Shorkyne and Trierzon regions and even northern Hârn itself, in the Kingdom of Orbaal.
Ivinia by map square
As with Hârn, Ivinia can be explored by map square. However, this region has not seen the same attention from canon and fanon writers as Hârn has. Still, the capability has been put into place to allow for future developments.
Portions of this region have been mapped in both the Atlas Ivinia and Atlas Keléstia series.