The great smithing city of Dyndond.
It is known as the only place in the world where Duergar and Dwarves managed to live together in peace.
The Thunderbenders were a proud and stalward dwarven people, who had carved themselves a decent living in the mountains of Deskal. After having dug for centuries, they ran into a clan of Duergar. The legendary dwarf Dhurfen Thunderbender used his inspired wisdom and charming personality to convince the house of Steelshadow to try peace for once, and together they forged a powerfull alliance that has continued to this very day.
They lived together in peace for centuries, and trade flourished. However, in the year 620 PF on the 10th of Aphiel, the city closed it's gates, to never see them open again. This event is known as The obstruction.