Fall of the Frozen Empire
Svalin Hold was the home of the Duergar in the northern Dugal Mountains. It was a massive underground structure that was a testament to the power and majesty of the dark dwarven empire.
As the last stronghold of their might it was destroyed by the advancing Legion. The city was such a sprawling metropolis that it is believed that not all of the hold could be destroyed and the army was forced to simply collapse many of the tunnels leading to it.
The occassional adventurer still attempts to seek fortune by finding the dead city, but it’s location is a closely guarded military secret. Doubtless, the city has been picked clean by the refugees who fleed during the confrontation and by treasure seekers lucky enough to uncover it’s location.