The nation of Cyre ceased to be on 20 Ollarune 994 Y.K. in the event now known as the Mourning. No one knows who or what caused the Mourning, but no living soul within Cyre survived the horror. The most extraordinary thing about this cataclysm is that it was contained completely within the established borders of Cyre. Now a dead gray mist hangs around what have become known as the Mournland, and within it the wounds of the Last War never heal.
The swirling mist that defines the borders of the Mournland is severely disorienting to try to navigate, but is not omnipresent throughout the land, but occupies an area between a few hundred feet up to as much as five miles inside of the border.