 During the Third Age the Dwarves of Moria continued to prosper until the year 1980, when, in pursuing a vein of "mithril", they broke open a chamber containing the last balrog known in the histories of Middle-earth, called Durin's Bane.They battled against the demon for one year, and after the death of two kings, the Dwarves who had not been killed fled from the Misty Mountains.For almost two decades they had no kingdom, but in the year 1999, Thráin I founded a kingdom at the Lonely Mountain.