The Farbelt pass was located at the extreme end of the Sentro region and was at the border of the Mounta region and the forbidden Darknar region. The place was a dangerous location that didn't directly come under the jurisdiction of Winged city or any of the surrounding City's as it would be easy prey for invasion from outside forces.
Indeed, something similar had happened in the past and a large city had fallen into ruins because of it. The fact that the land hadn't been claimed by the attacking family was a miracle but the Pass hadn't been developed since then and was now a monster den ruled by the King of the Pass, a ColdFire Drake.
Even so, outside forces aside. The Farbelt Pass had become a fairly high resource area that had been fought over by the surrounding cities for centuries although non of their battles were actually serious. In the end, claiming the pass had not been a priority for them and thus it remained the same.
