βThe ysleria of the Caliphate either live in the main named cities, random oases, or for the most part, the warrens - carved under the villages, deep beneath the dunes. These have few access points to lower the risk of shatal infection.
Warrens are grown from the (greatly) lahm-enlarged remnants of an agglomeration of people sacrificed (more or less willingly) to provide a solid structure. They usually bear a simple number to help distinguish from one another like βWarren O-12β if it's in Ombrelune territory or βWarren R-4β if Rivesac.
Unlike cities, they usually only have a couple tens of thousands souls there; so yes, quite tiny places dotted around the place, and only placed on the most detailed maps. Roughly 15 to 20% inhabitants live in the village above, and the rest in the warren.
And don't be mistaken - it might look pretty but the air tastes stale and humid, and if you live right under the opening, youβll welcome daily sand showers.β