Irem is the lost city of sorcerers. The people abandoned their gods to worship serpent folk they called the “Dwellers Beneath”. The Dwellers taught them much technology and magic, but eventually their hubris led them to believe they no longer needed the Dwellers. The Dwellers, as punishment, performed a ritual that caused the entire city to be consumed by the desert, lost to the sands of time.
Many have sought the city , but few have ever found it. Those who did, usually regretted it.