Re-colonization of Moria

The Re-colonization was an attempt to rebuild the dawrven kingdom of Moria. Under the leadership of Balin, the initial invasion was successful, and for a while the dwarves reclaimed some of Moria. The tide however turned in favor of the goblins when the Balrog known as Durin's Bane launched a counter-attack with a massive army of goblins. No dwarf surivived when the counter offesnsive began

Initial Battle
45 years after the Battle of the Five Armies, Balin along with Flói, Óin, Ori, Frár, Lóni, Náli and a large colony of dwarves marched from the Lonely Mountain to Moria to reclaim the dwarven city. The initial battle went well as the dwarves proved to be fiercely determined to take back their home, slaying every goblin in their path. Eventually some of Moria was reclaimed. For the nexy few years, Balin ruled as Lord of Moria. The goblins became a mere nuisence durring those years and were not serious threats

Counter attack
Little did the dwarves know, that Moria was ruled by a Balrog, a demon that dwarves were no match for. By the year TA-2994, Duron's Bane and a horde of Goblins launched a massive counter attack from the east. Balin was shot by an archer and died in Dimrill Dale. many other dwarves perished as well and retreated into the mines. Bloody fighting took place all over Moria, but the strength of the dwarves ultimatly were no match for the sheer number of goblins and the power of the Balrog. Soon the Bridge of Khazad-dum and the second hall were taken by the goblins. Frár and Lóni and Náli were among the casualties the dwarves lost in the second hall. Oin and a group of dwarves tried to escape through the Doors of Durin but were killed by the Watcher in the Water. The last dwarves barred the doors of the Chamber of Mazarbul and build a tomb for Balin. Eventually the goblins broke through and slew the remaining dwarves.

Aftermath
With the dwarven colony destroyed, moria continued to be a place of evil that none dared enter until the Fellowship of the Ring passed through it, slaying Durin's Bane in the process.