The Dwarves of Alair live in great cities, carved into the living rock of the Erean Mountains. Humans refer to these dwellings as Dwarfcastles. Gloiran and Kobur are north of Sildor and the Elf River; Nisur is to the south. The dwarves of Kobur are unusual in that they trade with the elves, sending trade caravans down from the mountains to Curulindale. There they will trade dwarf-made items to the elves, and to the human traders from the north and the Empire. The dwarves of Gloiran and Kobur make constant war on the orcs of the northern mountains, but both races are far too strongly emplaced to be completely removed.The Dragon's invasion did not affect the dwarfcastles of the Erean mountains very greatly. The southward migration of the entire Orc people - evicted from their great cities in the north - in the 1400s was a bad time for the dwarves, who were basically trapped underground while the orcs passed by.
The dwarves of Kobur sent troops to join the Great Alliance and fight at Lantalaure in 1415; none of them ever returned home.
The armies of the Dragon assaulted Kobur and Gloiran at the start of the abortive war launched southwards in 1600. Both cities withstood the assaults, though Kobur's western gates were destroyed in the attack and the King of Kobur, Hrolf Earthstar was assassinated early in the attack.
Since the Slaying, the dwarf cities have retrenched and repaired the damage of the brief Dwarf War. A new strong King in Kobur, Berrin Ironfist, means that the city is ready for anything that may transpire.