Icelost Years

The Icelost Years refer to an invasion of the continent of Tal'Dorei by Errevon the Rimelord, an elemental behemoth of the Frostfell.

Background
Following the long and devastating Scattered War, Tal'Dorei was significantly weakened. With two years of its ending, an unknown agent of the Frostfell took advantage of this and, using an existing rift between planes located in what would later be named the Frostweald, notified Errevon that it would be advantageous to strike. During a celestial solstice, the forces of the Frostfell did so, further opening the rift and invading the Material Plane with their forces of living blizzards and frost giants.

Known Events
Initially, the denizens of Tal'Dorei in the path of Errevon's storms quickly fell, unprepared as they were for this conquest. The unending ice storm created by the Frostfell armies grew over several years to encompass a large section of the continent, and those trapped within it were forced to acquiesce to the Rimelord's demands or perish. Foramere Basin became a fortress of ice.

The Council of Tal'Dorei was, after these several years, finally able to convince both Syngorn and Kraghammer - who had been on opposing sides in the Scattered War - to ally with them and fight back the invasion. Together, the peoples of Tal'Dorei along with Ashari druids were able to push Errevon and his servants back into the Frostfell. The Ashari permanently closed the rift between planes, and the storm then quickly subsided.

Conclusion
The victory that ended the Icelost years is celebrated on the winter solstice in Tal'Dorei, as Winter's Crest.

The geological and social changes wrought by this magical ice age remain. Errevon's ice fortress melted into Foramere Basin, creating an important source of fresh water for central Tal'Dorei. Some dwarves and elves who fought in the alliance against the Frostfell armies settled near this lake not long after the war, and even many years later their descendants still live there. Because of the memory of that alliance, Foramere is known as a place where dwarves and elves get along well, in contrast to much of the rest of Tal'Dorei, and to this day elves and half-elves frustrated with Syngorn's prejudice often settle in the villages by the basin.

The Frostweald, as the origin point of Errevon's deadly storms, remains in permanent, magical winter.