The Eastern Frontier is a wild and dangerous region bordering The Kingdom. Fort Brinks is the last outpost of civilization and obvious base for anyone foolish enough to explore it.
Mallow Brook forms it's western border. The Mist Mountains form an impassible barrier to the north. Some where far to the east the Legendary Canyon of fable is believed to truly exist. Foreign tales tell the southern edge consists of Wakewood just east of the Bright Fens and the Crystal Way, the Dreadfield Wastes, and finally the Deepburn Barrens a land of smoking rocks, boiling lakes, and fire.
At the Goat and Wizard in Fort Brinks adventurers record their discovers by carving a map into a large oak table. [As the players explore the campaign world they are encouraged to update a paper map kept by the DM. Occasionally this map is scanned and posted here.]