Once an empire of humans, Bael Turath became a great empire. However, somewhere in its history, its nobles made a pact with Asmodeus, turning them into the first tieflings. It’s possible that this could have been caused by possibly someone having Warden-like abilities? Just a guess. It changed the bloodlines and affected the whole empire.
The empire eventually came into conflict with the Arkhosian Empire, and endless war between the two empires eventually led to their downfall.
The party has located an ‘in case of emergency’ bunker in the Nentir Vale that was left to give a chance to rebuild. Read more about it on this log entry.