Archaeologists digging at Zaraysk, Russia, unearthed a trove of Stone Age figurines and carvings, including something puzzling: a cone-shaped object whose function remains a mystery:
Also among the finds was an object carved from mammoth ivory, shaped like a cone with its top removed. The cone is densely ornamented and has a hole running through its centre.
The authors note that the object is unique among Palaeolithic artefacts. "The function of this decorated object remains a puzzle," they say.
Since you guys are experts at guessing in our weekly What is it? game, let's try this one for size: what do you think the mystery object is for?