Explanation: When the Titans waged open war on the Olympian gods and lost they were sent to dwell in the <em><u>Tartarus</u></em>. In Greek mythology, Tartarus is a deep abyss in the Underworld which serves as a prison for the Titans. Afterward, it also served as a place of torments for the wicked. Other gods could be sent to the Tartarus also, as it happened to Apollo.