Quote Originally Posted by Ashkendor View Post
Mmmm... the dungeon name translates to something like "Sad Apology" as near as I can tell, which doesn't really fit I don't think.
While I can't speak for that part of the name, the Japanese name is a bit longer: 'Heavenly Dragon Palace Sohr Khai'.

Nidhogg is one of the heavenly dragons in the game, so make of that what you will.