The image is a photograph of a display board in a museum. The board is white with black text and illustrations. On the left side of the board, there is a diagram of a circular object with a curved top and a flat bottom. The object appears to be a part of a larger structure, possibly a temple or a temple complex. 

On the right side, there are three smaller illustrations of the same structure. The first illustration shows a close-up of the structure, with a small hole in the center. The second illustration shows the structure with a larger opening and a smaller opening on the top. The third illustration shows an aerial view of the building, with the entrance and exit visible.

The board is mounted on a white wall with a glass panel at the top, and there are small lights on the ceiling.