This quest was marked obsolete by Blizzard and cannot be obtained or completed.
Andi Lynn in Gadgetzan wants you to destroy the Dunemaul Compound by killing 10 Dunemaul Brutes, 10 Dunemaul Enforcers, and Gor'marok the Ravager.
Just recently, a large band of nomadic ogres arrived in Tanaris. South of here, they have taken over a large area of the desert and formed a compound. Several smaller bands are currently wandering the desert, some of which have invaded the old troll ruins.
The Dunemaul Compound must be destroyed! We cannot allow these ogres to build up a force.
The leader of this band is named Gor'marok the Ravager; I believe that putting an end to his leadership will be the beginning of the end for the ogres.