Prehistoric Artifacts Out Of Nowhere - Their Origin And Purpose Are Totally Unknown [1]
These strange artifacts are symmetrical in design and very skillfully manufactured. In form they appear to be quite modern, but they are not.
These prehistoric artifacts of unknown origin were found mainly in Scotland and a few of them in England and Ireland.
Many say they are hoaxes, but if that's true, why are they kept in museums as valuable objects?
Archaeologists say these carved stone balls date to approximately 4000 BC, and are made of various stones ranging from sandstone to granite.

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Credits: Ashmolean Museum
They are all of a relative similar size and are decorated with carved evenly-spaced patterns of circular bosses or knobs around the surface of the sphere. The designs vary with the majority being based around a series of six bosses, but the number of bosses varies from 3-160.

Five carved stone balls from Scotland (AN1927.2727-2731). Credits: Ashmolean Museum