While at first there were no comments about this head being found all the way inside the third chamber (
from the entrance) of the Amphipolis’ tomb, archaeologists now
have to admit that it is a mystery.
[Picture from The Greek Reporter]
My initial thought was looting of the tomb in antiquity that would have displaced some of the elements; another thought was that the chambers were filled with soil at some time after their construction and that the broken head (or heads) of the sphinx was used together with other rubble to fill up the rooms.
Today’s article in The Greek Reporter mentions that while removing more earth in the third chamber, archaeologists found that the limestone floor was missing some stones and that the floor looked very much as if someone had been digging there. The head of the western sphinx has not been found yet but they hope to locate it when shovelling out more dirt from this room in order to reach the narrow door of the fourth wall.
Already plans are being made to restore the sphinx with the newly found head and parts of the wings. Archaeologists believe that the Caryatids and the Sphinxes were carved by different artists because the details of the sphinxes are finer than those of the caryatids, which were crafted from a single slab of marble.