The image is a photograph of a plaque on a wall that reads "Bronze Aquatic Birds Pit". The plaque is rectangular in shape and has a black background with white text. The text is written in a cursive font and is centered on the plaque. Below the text, there is a description of the pit, which is located about 900 meters to the northeast corner of the outer city walls. The pit covers an area of 978 square meters and is an L-shaped subterranean wood-and-earth structure. It is divided into three sections, within which, there were found 46 life-size bronze geese, swans and cranes, 15 terra-cotta figures in sitting position. As well, some animal's skeletons, some silver, bronze and bone objects were considered to be relevant to musical playing. Therefore, it is possible that this pit may imitate the institution of yuefu, an official department in charge of music affairs.