Once a great and beautiful cross-roads of Moria, the Grand Stair is a vile haven of many of the gathered tribes of Orcs. Igash, regarded as a leader by all of the varied groups, gathers tribute from every tribe to give to Mazog, the mightiest and greatest of Orcs in Khazad-dûm. The dwarves wish to unseat Igash's Orcs from this Grand Stair and stop Mazog from receiving valuable and unsavoury gifts.
Many tribes of Orcs prowl the Grand Stair, south-east of the Twenty-first Hall.
Geirr has asked you to defeat Igash in the Grand Stair without defeating any other members of the Moria Orc-tribes. In doing so, you will assist in efforts to reclaim that cross-roads for the dwarves and prove your great worth to Sigurd.