The March of the Old Gods
Vihn Bhuldar was the 5th and final city to be brought under the Kingdom of Thorfaldur. Vihn Bhuldar originally started as an outpost that was manned as a necessity. The defenders of the outpost made their final stand against a force that outnumbered them nearly 10:1 and held them off long enough for reinforcements to arrive, repelled the attackers, and founded the city.
Today, Vihn Bhuldar stands as a bastion against threats that would encroach from the surface, and routinely fight off frost giants and fire giants, in addition to Drow coming from further underground. A council of lords rules over the city, and answers to the king in times of war or great need.
Vihn Bhuldar produces more alcohol than all of the dwarven cities combined, and never fails to point that out whenever the other cities question their contribution to the kingdom. Furthermore, Vihn Bhuldar will often sponsor expeditions into the mountains that recieve mixed results. Some come back with great wealth, others come back empty handed, and some don't come back at all.