This 100 mile long gash in the earth drops down into the depths of Kyber. The canyon is reputedly home to a foul beast, greater in size and power than the largest dragons. However, it is rumored that explorers who brave the perils of Goradra will find themselves before the gates if a hidden kingdom. From this place, the ancestors of the dwarf clans were exiled millennia ago, and their distant kin are said to live there to this day.
Baker, Keith, and Wyatt, James. "The Mror Holds"Eberron Campaign Guide (4th Edition). Wizards of the Coast LLC. Renton, WA. 2009. pg 148.