Beyond the doorway is a stone staircase, going down. It's smoothly carved, and of grey stone. It, unlike upstairs, has not lichen of any sort. The hallway around it is arched at the ceiling, almost too close to be comfortable in design, but wide and tall enough that you know you'll fit through (with two horses and riders); just that the angle seems... uncomfortable in design.
The stairs go down a short way, then reach a landing.