User blog comment:Zippertrain85/Dawnguard Follow up./@comment-17114085-20131216013719/@comment-17114085-20131220202832

1)He never tried to conquer it back because he didn't have an army. Also maybe Harald did try to find them but couldn't, maybe the castle has a magica barrier around it that makes it invisible or something because there is no friking way no one ever saw a massive castle just a little ways off the coast of Haafingar, I mean the Thalmor have a base very close to the castle.

2)What the hell are you talking about? She heard about the existence of a High King in Skyrim from one of the humans in the castle. How does this refute what I said?

3) same things as above. She spent a lot of time in the castle, she talks about it during the questline. Like how she explored the ruins of the castle, and how she always helped her mom with the garden.

2&3) Another part of evidence that point to the Volhikar contacting the outside world is when Serana mentions the Moon Dial thing in the garden, Serana's mom brought a mortal to make it. Which could have been one of the many mortals who could have told them about what has been happening in Tamriel.

4)Because Zip they tried to run but Ysgramor found them, no where in Skyrim was it safe from him, the Atmorans were after vengeance and were going to get it no matter what. Also the reason for no snow elf city being around till now is either Ysgramor burned them all to the ground, or time and neglect caused their destruction. Or it could just be another oversight by Bethesda for not adding Falmer ruins like in the forgotten vale.