The first stones that would become the Compass Tower were laid down by the Zo circa 9000 BGM (Before the Greater Moon). Led by the Goddess, Zoë, the Ancients cross the frigid Crown of Aenya Mountains to discover the uncharacteristically lush valley of Tyrnael, and the solitary mountain at its center, from which the Potamis River, the Lifeblood of Aenya, flows to the One Sea. Ongoing visions lead the Zo into the heart of the mountain and the sacred pool where, it is believed, the first living cells on Aenya originated. Consecrated as the birthplace of Zoë, the Compass Tower is built in her honor, rising from the craggy peaks like a spear in the hand of a stone giant. Decades later, the Compass Tower becomes the seat of power for the Zo Ascendency. A network of bridges links the tower to terraced monoliths constructed around the city and, later, to the seven neighboring cities across the valley.

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At 0 AGM, tidal forces arising from the Mass Piston in Aenya's core ravage the planet, resulting in a major extinction event. The Zo civilization collapses, and the once-great city of Tyrnael fades into myth, becoming known by future civilizations as Mythradanaiil.

 

Modern Tyrnaeleans, having weathered the destruction of their land within various underground strongholds, survive to rebuild the city and the Compass Tower at its center. With the Ascendency having fled the planet, a new line of kings and a new dynasty begins.