Battle of the Second Hall

The Battle of the Second Hall was a battle that took place after November 10, TA 2994 between incurring orcs against the defending Dwarfs of Balin’s Colony in the Second Hall of Khazad-dûm. Prior to this, Balin had been slain by an arrow and Balin's Colony was forced into the seventh level of Moria. Eventually Oin and Ori took command of the Colony and did their best to ensure its survival. Sometime after this battle, Oin was slain by the Watcher, and Ori was left in command of what was left of the expedition.