Frostfell

In the Eberron campaign setting for the Dungeons & Dragons fantasy role-playing game, Frostfell lies at the northern extreme of the world, separated from Khorvaire by the Bitter Sea. It is a place of eternal ice and snow, mostly unknown and seldom visited by mortals.

The Frostfell was also a concept explored in the Frostburn.

Other uses
In the EverQuest 2 universe, Frostfell is a wintertime holiday season celebrated throughout the fictional world of Norrath.