Ephyra was the capital city of both the nation of Tyrus and the Coalition of Ordered Governments during the Pendulum Wars. The city was built upon the once-thought impregnable Jacinto Plateau, but was attacked by the Locust Horde on Emergence Day and fell to the Locust a decade later, suffering catastrophic damage. During the day, much of the city was under the Locust's total control, and at night it was overrun by Kryll. Only a few pockets of Stranded human survivors remained in Ephyra until the Lightmass Offensive.