Undermound – A large mountain situated in a gigantic underground cavern in the Warrens.
Unification Summit – A series of talks held in Bot Sakor to discuss the fate of the border town. Diplomats and Ambassadors from both sides were invited to present their views. The Summit was interrupted when one of the delegates was assassinated and another implicated in the murder.
Unionism – One side of the Valang Schism. After the Second Battle of Barricade, the Valang collapsed into a Civil War over the issue of re-joining the Tranthaean world or removing themselves from all contact. Unionists favoured the former. (See also Valang Schism)