The Luminal Roads

The Luminal Roads
The Luminal Roads run all across the World of Twelve Moons.  They were constructed by the Luminal Engineers, who build things out of solid light.  The Roads were completed centuries ago, but the various cultures that they run through are still paying the Luminal Engineers for them.  The Roads provide safe, quick travel routes across the World.  Many of the Cultures they traverse cannot exist without them.  This gives the Luminal Engineers a great deal of influence.  If a Culture fails to make its payment, the Luminal Road that run through their territory is shut down.  This can have a devastating effect on local commerce and travel.