Recently, archaeologists found prehistoric hats from an ancient tomb site at Tongliao City of Inner Mongolia. Experts said it was the first time this kind of hats, which were made from bones, have been found. Archaeologists have discovered and investigated almost 400 ancient tombs dating back 4,500 years ago around the site, and more than 1,500 objects of pottery, jade stone, horn and clam shell were excavated.
     The newly-found bone hats were tightly cramped on skeletons' heads and had the obvious shape of a hat. After inspection, those headgears were made from 15 or 16 very delicate animal bones. Archaeologists have found four complete 'bone hats' from those 400 ancient tombs.

Source: People's Daily Online (6 September 2010)