WSD was full of water today due to the heavy rains last night. It was impossible to work inside the trench, so instead we spent the day working in locus 02, the top of the northwest wall. In the process, we exposed a line of stones toward the north corner that transects the wall. This appears to be the top course of stones lining the doorway from WSD to WSJ. This confirms what I had already suspected from the situation inside the room. Unfortunately, there is a single massive boulder that has fallen into the space of the doorway, so tomorrow we'll hopefully break this and excavate the passageway.