|Built||5 Saunas 8983 GE|
In southwestern Mirtheon are the mithril-rich spires of Bileddanul. In the Demon Spawn War, these highlands were a strategic source of mithril; a metal important to the Covenant because of it being more effective at piercing the hides of demons.
Bileddanul's mines were under the watch of then archangel Naraz-Nâru. The mithril, gemstones, and other ores that came out of these peaks were destined for the war effort. They were sent along rails that joined one central line nicknamed the Glittering Serpent. It was named thus for in the gorges, canyons and steep areas, there were the remnants of mithril carts that had toppled over the edges with their precious cargo. The Glittering Serpent snaked down treacherous peaks to a large forge works named Izanargam. In the God Era, it was a foundry supporting Covenant soldiers battling Demogorgon's invasion of Hells Womb. Izanargam started as a depot for raw materials, but then grew to being a vast forge works surrounded by sprawling workshops and living areas. The finished goods from these places were then sent down the Foronir river in support of the war effort.
After Covenant forces defeated the demons, Izanargam's workers and soldiers, mostly Turkûn, were left to make it on their own. Many of them stayed at Izanargam. By war's end, it had grown to 20,000 souls. The mines in the surrounding mountains continued to be worked, with settlements growing up around them. Izanargam was a major source of food for these highland settlements, so it ended up being the most important. It became a city-state, then capital of various Turkûn kingdoms, with the last being the kingdom of Gimhak.