The Halls of the Boundless Reach are entered through a portal near the base of the central tower of Antorus, and it is in all likelihood that tower's interior, though exactly where it is located is unknown. Here, Portal Keeper Hasabel oversees portals to Argus, Xoroth, Rancora, Nathreza, Elunaria and others. Massive versions of the face depicted on the spire of woe adorn the walls.
Quotes[]
Upon approaching the teleporter to Halls of the Boundless Reach
Archmage Khadgar yells: Champions, there is a disturbance close to your location the likes of which I haven't felt since the opening of the Dark Portal.
Archmage Khadgar yells: If the Legion is using that hub to gather reinforcements, then it must be destroyed before we are overwhelmed.