The mountain of Thornhelm is home to the Dwarven ruins of the same name.
The Gates of Thornhelm are massive stone doors that are carved into the face of Mt. Thornhelm. Beyond these doors lies a carved stone passageway that leads down into the depths. The passageway descends for over a mile before terminating in another set of massive stone doors, this set reinforced with iron and magic. Beyond this second set of doors lies Thornhelm, last home of the Dwarves.
The Dwarves were slaughtered long ago by the forces of the Ahriman Empire, but their ghosts sill haunt the ruins. The spirits of the Dwarves do not react well to adventurers who come looking to steal their gold and precious gems.