Question about the first

[Edax]

So alas, don't expect to see anything remotely like Amaurot left on the Source I'm afraid.

Would it not be possible for the ruins of Amaurot to exist underwater on the Source and merely undiscovered since the Ocean is a massive place and hard to reach in many, many places? Water does a good job of cushioning ruins against a calamity and the Kojin are not numerous enough to explore the entire ocean floor of Hydaelyn.