Al-Ybi
From Discworld MUD Wiki
Al-Ybi is a currently inaccessible Klatchian city with a viaduct system above it that you can walk upon in the terrains. It is surrounded by plains and connected to the cities of J'Nub Avr to the west via the Eritian Desert Road, Hayl to the east on the Al-Ybi Coast Road, and Shish Kbab to the southwest on the Tsort Road.
Al-Ybi is an option for a character's regional starting location. It is described as an undistinguished Klatchian desert city, known in folklore as a place where criminals always claimed to have been when accused of a crime. In Al-Ybi, it is said, the Klatchians invented the concept of zero. That tells history everything it needs to know about what there was to do in Al-Ybi of an evening.