The Underdark
Once, long ago, deep beneath the earth lay the Underdark, a network of vast caverns and tunnels in which the denizens of the dark lived. This was the domain of the drow elves and many of the dwarves and their kin.
The God-Emperor left the Underdark largely alone, save for a few clandestine agreements made with dwarven rulers for access to magical ores. Why this was so is unknown, though a popular theory is that the God-Emperor's power could not extend below the earth. Others believe the Underdark was the domain of another god-like entity whose name has been lost to time. Whatever the case, life in the Underdark was not much easier, as the caverns were full of treacherous creatures and entities.
The end of the God-Emperor's reign meant that the Rockbringer, a vast maelstrom of earth and rock, was no longer held at bay, and filled the caverns in with its continuous vomiting of dirt and rock, buring even the largest cities and forcing all who lived underground to die defending their homes, or escape to the surface to start anew.
Thaddeus "Klep" Klepfeld
The Underdark has been long touted as a place of mystery and death, where all the creepy crawly things live, waiting to bite your head off.
As far as I'm concerned, the Rockbringer was a savior to do away with it like it did. My only wish is that it had announced its presence earlier, to allow the good-natured folk to escape before being buried.
Dekhza
Under Broadsea was once the dwarven city of Dekhza. One of the oldest dwarven cities in the world, massive in scale and intricately designed, Dekhza flourished with trade, being founded above one of the largest veins of mithril in the world. It, too, was buried in earth by the Rockbringer, its inhabitants either dead, or in the Stoneward of Highhaven.
