The doors ahead to the right and left open into the Keep granaries (20x30 and 30x30, respectively). Flour sacks, long since destroyed by vermin, lie around the room. At some point in the past these rooms must have been the home of an impressive number of rodents, judging by the petrified droppings, but they have long since moved on.
You can see that the chamber at the end of the hall is a large kitchen.