Also known as “The Desolation of the East” and “The Divergence of the Planes” in different cultures.
Believed to have been a near world-ending catastrophe and the starting point of the current calendar (AD). Contradictory to what one would expect of such a major historical event, very little is known about what actually happened. Records are strangely missing information from the period right around this event, and the few beings left who were alive at the time either do not know or refuse to share said knowledge.
While many a scholars and researchers have developed theories based on the state of the world before and after the event, the specifics as of what, how, and why the Great Disaster happened remains outside publicly available knowledge.