An'quat was the name of a city on he planet Qo'noS.
In the Heroic Age An'quat was the site of a victorious battle for the forces of Kahless the Unforgettable against the armies of the tyrant Molor. (TNG novel: Kahless)
An'quat was attacked by the Borg in 2381, sustaining heavy casualties. (ST - Destiny novel: Lost Souls)