The boundaries of the Cursed Lands once stretched out to cover the entire Western portion of Ryllian's continent, but with one wave of Yndra's hand, the borders were changed and the New Frontier was created. However, nothing has really changed for the Cursed Lands.
The Cursed Lands are full of monsters and dangers of all kinds. The primary sentient denizens of the Cursed Lands are scattered tribes of orcs and other orc kind. The orcs have not created any sort of government and have seemed content, for now, to be pushed back to the North out of the New Frontier.