Demons, Devils, and Dragonsbane
Frostgrip is an abandoned Dwarven fortress that has recently (~ 1008) been taken over by the frost giants that are vying for control of the area with the Dwarves of the Dwarven Kingdom.
Frostgrip was also the home of the first Dwarven scholars and students of magic. In the depths of Frostgrip, it is rumored that the first mages of the land performed horrible and wonderful experiments after being inspired by the wandering Fey who taught them of magic.
It is proven that the Dwarven fortress of Frostgrip lies atop several layers of a winding, confounding, and treacherous dungeon. The exact depth of the Frostgrip dungeon is unknown.