South Addar is a protrusion of land bounded on the west by a chain of high mountain ranges and on the east by the long Gulf of Hedrin. Kept dry by the rain-shadow of the western mountains, the region is dominated by the Plain of Srevi, a semi-arid and mostly uninhabited expanse of steppes and grasslands that gradually transitions into the sandy Desert of Terza in the northwest. Farther south the land becomes hillier and more wooded.
Eamon's earliest human civilizations formed along the forested shores of the Gulf of Hedrin before spreading out across the world. Tasavalta, the first known human republic, once stood near the mouth of the gulf but was utterly obliterated in the First Ruin. The cataclysm collapsed the land it occupied and allowed the sea to rush inland, creating what is now the gulf's long northwestern arm. The ancient land of Kor and its city of Ishvatur later arose at the northern end of this arm; it's now held by the forces of the Darklord Skeleus.
Modern lands in this region include Saxavania, Norsax, and Tornio along the southern coast, the Southern Troll Kingdom in the Sax Mountains, and a handful of petty kingdoms and city states such as Alvard.