Ancient auditory illusions reflected in prehistoric art?

Some of mankind's earliest and most mysterious artistic achievements—including prehistoric cave paintings, canyon petroglyphs and megalithic structures such as Stonehenge—may have been inspired by the behaviors of sound ...

Stonehenge was ancient rave spot, new theory says

British researchers on Saturday unveiled a new theory for the origins of Stonehenge, saying the ancient stone circle was originally a graveyard and venue for mass celebrations.

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