Kogan-san

Seated in the Black Tooth mountains the fortress of Kogan-san was a subject city of the Iron Halls. In AS 1022 Orcs came over the mountains to raid the dwarven lands. They were caught off guard and suffered serious losses before driving the orcs out. The area around Kogan-san was heavily damaged. Driven nearly to starvation and cut off from the outside world the survivors were slowly killed by wild animals. Last that was heard there were a few remaining dwarves left before a great volcano erupted, scorching the plains at the base of the mountain and preventing further access to the site for many years.

Founding of Kogan-san
In AS 527 dwarves of the Sozek clan got a grant to found a new mining settlement in the north. They began by building a small village at the foot of the mountains. Soon after they began to dig a great city into the rock. The city grew affluent from the rich ore deposits found there. Things were peaceful for a time with traders coming from afar to trade with the new colony.

The Fall
The orc nation of Angnarok heard of the great wealth in Kogan-san and launched an attack in AS 1022 to claim it for themselves. A pitched battle was fought and the orcs were driven back. The village outside Kogan-san was destroyed and the city inside was crippled. The last refugees escaped shortly after this. They brought back amulets depicting the battle carved from ivory. These dwarves told stories of the wild animals that began to attack the remains of the fortress after the orcs fled, but didn't know what happened to those who could not make it out. A small scouting party was sent but didn't make it all the way to the city before a volcano erupted and destroyed the surrounding area and it is assumed the city of Kogan-san itself. A very few bold adventurers have tried to go to explore or reclaim the lost city but most never came back and those that did were driven mad. One dwarf who made it back in AS 1498 now only speaks of elephants, wild apes, fields of corpses and a "dwarf god of fire" when anyone can get her to stop screaming that is. What remains of the Sozek clan is trying to rally a large group of dwarves to retake the city for good before the frost giants of the north decide to move in.