Criminals whisper of an inescapable prison of blue ice built atop a snow-covered mountain far to the north of the Nentir Vale. They say that its cruel fey inhabitants magically encase prisoners inside its icy walls, freezing them alive forever.
Despite the inevitable exaggeration that comes with spreading rumors, the stories are true. An order of ensnaring swordmages called the Winterguard of Cendriane administers the prison.