Arrajan

Arrajan (Argan) was a medieval Persian city located between Fars and Khuzestan, which was settled since the civilisation of Elam in the second millennium BCE, and was important from the Sasanian Empire until the 11th century as the capital of a province of the same name that corresponds to present-day Behbahan in Khuzestan province, Iran. The city was refounded by the Sasanian emperor Kavad I and continued to develop in the Islamic period. Having fertile soil and supplies of water and integrated into a major road system, this small province flourished and reached its peak in the 10th century. It declined by the 11th century as a result of an earthquake and military conflicts.

Archaeological site data from Wikidata (CC0). Summary from Wikipedia (CC BY-SA).