Maraxilan

Maraxilan was a Scourge Necropolis designed by the Scourge Nerubian Lord Anub'neralis, it was built under the Borean Tundra during the rise of the Scourge. Maraxilan wasn't finished during the War against the Lich King but was eventually deployed by Death Knight Belric Legost in his renewed campaign against the Argent Crusade following the Siege of Orgrimmar.

Once it was finally deployed it was put under the command of death knight Joanric Morgul, an underling to Legost. Forces of the Argent Bulwark attacked the necropolis as it was floating over the eastern regions of the Dragonblight in Northrend. After a hard week long campaign within the fortress the Bulwark was successful in capturing it, setting off explosives inside it, causing it to crash to the ground.