The sad sun stone is an ancient petroglyph from the Sassanid era, which was discovered in one of the ancient excavations in the Qara-Balagh region of Azerbaijan, on top of a tumulus hill that was buried two meters underground, and two different leaves of this flower indicate two rooms, one of which is empty. And one is full, and the sad sun indicated the full room in the western part of the hill, which was deciphered, and this stone itself is available now and will be handed over upon request.