At the very least Twilight felt she could be thankful that the entrance to the dungeons were exactly where she remembered them being. She suspected she might have swore loud enough to give herself away if they had actually gone through with the immense amount of effort it would take to move it, cut out of stone as it was. It did seem they'd put a door in the entrance though. A rather solid one, unlike the revolving door the former occupants of the keep would likely have needed if they had bothered to put one in at all.