It is the chief rival of Turan. Its capital is Anshan. It trades with Vendhya and with the Black Kingdoms, and probably with the Hyborian realms as well. Oil pools can be found in its central regions.
Iranistan is a warm land, with moderate rains, especially on the seacoast. The land itself, however, is stony and infertile, and most Iranistani supplement their diet with hunting and fishing from the extensive wilderness.
The Ilbars Mountains are arid with few trails, many box-canyons and twisting gorges. In the northern portions of the Ilbars, these mountains contain occasional small plateaus where Ilbarsi tribesmen eke out a hunter-gatherer existence. In Drujistan, the lands are more precipitous, and there are few places to settle. Drujistan is believed to be a "land of demons" and feared by the Iranistani peoples.
There is no "state religion" in Iranistan; the temple district of Anshan is a confusing maze of tiny hut-shrines beside huge stone temples. The strength of a given cult is directly tied to the associated tribe's favor with the king.
References: Bloodstained God, Road of Eagles, Flame Knife, Shadows in the Skull, Conan of the Isles, Conan and the Manhunters, Conan the Hero, Conan and the Shaman's Curse.