The Frontier Expanse

The Frontier Expanse is a vast piece of land located between the Deepsung Mountains and the city of Naokos. It's been one of the Great Continent's least populated areas for at least a millennium.

Geography
An area as massive as the Frontier Expanse holds all kinds of terrain from the lush and overgrown forests to the south to the cold tundra to the north. There are reports of treacherous bogs and cold deserts in between, but the maps made of the Frontier Expanse have been local and vague at best.

In addition to its natural geography, the Frontier Expanse - and especially its largest section, the ruined Treteia - contains many ruins from ages past, both easterner and westerner in origin. The centuries-long Treteian-Ti'kasonian war and the shadow infestation left their mark on the land and scholars widely suspect that the very fabric of the world has been damaged in certain areas, causing pockets of wild magic and strange occurrences as well as having bent the landscape in unnatural ways.

Political importance
The unwelcoming and harsh Frontier Expanse is an important barrier between the empire of Ti'kason and the rest of the world. Some of the wounds from the past wars still haven't healed and the easterners are largely seen as the boogeymen of the world, supposedly still looking to force the westerners and the Talaneans to submission at the first chance they get. Whether this is true or not, it is impossible for a large army to march through the Frontier Expanse fast enough to catch anyone off-guard and avoid suffering crippling logistic issues.

Hazards
The Frontier Expanse is an uncivilized, ravaged land. Savage tribes of Treteian ancestry wander it as raiders and nomads, and the lawlessness of the land has drawn bandits and mercenaries to plunder the riches of the ruins of Treteia and whoever is foolish enough to seek anything in the region.

The Treteian-Ti'kasonian war is said to have damaged the laws of nature itself, and rumours speak that you can still be swallowed into ghastly emanations of skirmishes in long-forgotten battlefields.