A subcontinent of Eethrum, Arium was so named by the gnomish scholar who is credited with proving its existence several hundred years before the Rising. Many other scholars believe that the minotaur must have had some knowledge of the place, because Arium matches their description of the minotaur Underworld.
The first known living travelers to visit Arium were the Heroes of Death, who sneaked through its mountainous regions during the Battle of Arium. The Heroes rushed through the labyrinth that protected the Tower of the Wight and slayed Ebrima Jawara at the top of the spire, while the minotaur forces attempted to take the beach from the undead army on the western side of Arium. The minotaur suffered extreme losses before Ebrima’s heart was destroyed, turning the undead army to ashes.