Grommash Hold[40, 37], also called Thrall's Fortress as referred to by guards, is an enormous fortress located in the Valley of Wisdom in the orc capital of Orgrimmar. It is named after the orcish hero Grom Hellscream. The Hold serves as the administrative center of the Horde. The warchief, Thrall, the troll leader, Vol'jin, and Eitrigg reside within Grommash Hold. It is also home to an elite sect of warriors who serve as Thrall's personal guard, the Kor'kron Elite. Within the antechambers of the Hold are Orgrimmar's leading shamans, of whom, Thrall is the foremost. As of patch 2.1, also contains a Paladin trainer, Master Pyreanor.
Thrall holds court inside the hold, while outside a traveler may find a monument to the orcs’ triumph over demonic influence. Mannoroth, the demon lord who cursed the bloodline of the orcs, fell in battle to Thrall and Grom Hellscream. Mannoroth’s skull and armor are displayed on the trunk of an ancient tree, bearing a plaque that tells of the orcs’ victorious transformation and reminds readers of the mistakes of the past. The keep is simple, and while well designed, it lacks the riches and statues one might see in a human palace.(LoM 42)