Sacking of Mount Gundabad

After the murder of King Thror by Azog I, Thrain II became king. He summoned a host of Dwarfs to fight against the Orcs of the Misty Mountains for the evil atrocities done unto all Dwarfs. Thror's slaying urged the Dwarf Kingdoms to rally behind Thrain II. Thrain II ordered the sacking of Mount Gundabad for the Goblins had taken their former home for themselves. So Mount Gundabad was totally purged of Goblin infestation, and the Dwarfs continued to press forward in the mountains towards their ancestoral home, Khazad-Dum.