Thorins Halls

Several years after the Sack of Erebor by the dragon Smaug, the exiled King of Durin's folk Thrór was murdered by Orcs. Thráin II led a host of Dwarves from his and other house in a great war against the Orcs of the Misty Mountains. After that, Thráin's people moved to the hills of Dunland and stayed for some time before moving to the Blue Mountains and established their Halls in the year T.A. 2802. For nearly forty years Thráin ruled his people in the Ered Luin, but was driven to obsession by his ring of power. In 2841 he left with a small group of followers to return to the Erebor determined to kill Smaug and take his father's realm back. But in 2845 while encamped on the eves of Mirkwood Thráin was captured by the servants of the Necromancer and taken to Dol Guldur; where he was tortured till his death many years later. His followers including Balin and Dwalin did not know his fate, and after searching for days they returned to the Ered Luin.