Quote Originally Posted by Kallera View Post
Seems wierd that such advanced civilizations, capable of making dimensions and contracting demons, could fall apart from a flood.
We don't know much about that Umbral Event other than its source: the Elementals and Oha Sok, their rage manifest. However, given the fact that the Void Ark was so high up for so long, we can probably assume that it wasn't your average flood. We've seen how weird Aether can make natural occurrances.