Barely having time to meet your new squad mates, you're hustled into the Castle proper, led by the Kings Guardsmen through twisting corridors, in to the ever deeper parts of the castle. Finally arriving at a set of stairs the Guardsmen march off. A man at the bottom beckons you down, and then walks away.
Though visible it is obvious the bottom of the stairs is lit by much less then the rest of the castle had been. The area is also made of a much black stone, in contrast to the white of the rest of the castle you'd seen.