|Built||6 Hollow 514 HE|
Izdurgrak was built by the dwarves of Malad-Mîn. They built it in the Horgon Era as a bulwark against the giants of Aemar and those pushing west from Saer Erkjorg. Izdurgrak was erected across a mountain pass leading north into Khalas. This pass is Khazan-Fel, one of the more safer and quicker routes to travel into the seemingly endless ice fields of Khalas.
In the conflicts with the Titan Empires, Izdurgrak held against many assaults by giant armies from both east and west. The western attacks were perpetuated by Aemar's stone giants and those from the east were soldiers or raiders out of Saer Erkjorg. The times the place did fall, it was not held long before dwarven forces came in through the tunnels going through Iberak and into the bowels of Izdurgrak. In this Underdark is a fortress connecting with one on the surface. It was built after one of the times it fell, with the dwarves making the passages sized for them but impassable without digging for anything larger. As a result, the dwarves were able to hold this lower area even when the surface fortifications fell to marauding giants.
Izdurgrak is built into the blue-gray cliffs overlooking the valley Hou'tzor. After the fall of Cûngin-Zar and Saer Erkjorg, operations shifted from defending against giants to defending against undead. Fortifications were changed to deal with restless spirits and the lifeless. The defenders of Izdurgrak keep watch over the ancient battlefields of Hou'tzor. This valley became haunted in 1537 HE when an eldritch giant lich named Erthjorn sent his undead legions against Izdurgrak. They tore apart two legions of dwarves in the siege, but were themselves defeated. Erthjorn was surrounded and killed, but his essence was so powerful that it drained into the landscape, leaving the valley forever tainted with negative energy and plagued with unusual weather.
The defenses of the place are formidable with five tiered walls and twenty fighting decks spread between them. The walls are lined with a layer of lead and are reinforced with iron rods. These rods are magical and can be heated to melt off any ice or snow that builds up against them. During the razor sleet, blizzards and death hail that frequent the valley, these iron rods afford the heat and protection needed to keep the defenders of the place in comfortable conditions when assailed by the undead that plague Hou'tzor.
Izdurgrak is linked to Khalas by sixteen underground passages. Each of these are covered by heavily fortified keeps that can be flooded with chilling glacial water if taken by invaders.