Human: Make a concise location description of a gloomy scene inside a passage with a mast and a tuft of grey fur. Assistant: 
The passageway narrows as the mizzenmast consumes most of the space aft of a dark opening and forward of the gated brig. A ring of candles encircling the mast casts dancing shadows on the deck but does little to brighten the gloom. A flattened tuft of matted grey with a stringy tail lies in the portside aft corner.