Board Thread:Lore Discussion/@comment-23371555-20131219220528/@comment-24274106-20131219235750

The Aedra convened at the Adamantine Tower, the oldest known structure on Tamriel, to decide Lorkhan's fate, they ripped out his heart and threw it to Vvardenfell, forming the Red Mountain. Lorkhan then became Masser and Secunda, Nirn's moons.