Beneath the surface of the world Adumar, existed expansive subterranean complexes known as Turumme-warrens, which served as residential areas. Typically, these constructions were the property of and situated above subterranean production facilities, providing lodging for the employees of those plants.
The name Turumme-warrens originated from the Turumme, a type of reptile known for constructing intricate underground burrows.