The Ninth Circle is located on the upper level of the Underworld concourse. The bar consists of a few tables and chairs, along with the bar lined with stools. There is a radio on the bar table that plays GNR. If the player character turns it off, the other inhabitants will not turn it back on. Behind the bar are two shelves of alcohol along with plates and utensils, and a fridge to the left of the shelves.
Ahzrukhal stands behind the bar initially selling alcohol, but he will also sell chems if asked. There is another bar counter to the right of the two shelves, on which sits Ahzrukhal's terminal. Ahzrukhal's employee, Charon, stands in the southeastern corner of the bar.
The Ninth Circle appears only in Fallout 3.
Behind the scenes
The Ninth Circle is a reference to Dante's The Divine Comedy. The first canticle is Inferno, or Hell, which contains nine "circles," each populated by a specific type of sinner. The Ninth Circle is the lowest, and final, the circle of treachery and betrayal.