original_query: How was Bori rescued from the Dungeons of Dol Guldur?
query: How was Bori rescued from the Dungeons of Dol Guldur in The Lord of the Rings Online: Mines of Moria?
answer: Bori was rescued as a result of a successful military campaign by the Golden Host, a large-scale assault on Dol Guldur that served as a diversion.  The Hidden Guard's mission to exchange Mazog for Bori failed, but the Golden Host's actions weakened the enemy and allowed for Bori's eventual rescue from the Dungeons of Dol Guldur.