A scientist says that Stonehenge was inspired by “auditory illusions,” according to a story in Guardian UK. Independent researcher Steve Waller says “the layout of the stones corresponded to the regular spacing of loud and quiet sounds created by acoustic interference when two instruments played the same note continuously.”
“If these people in the past were dancing in a circle around two pipers and were experiencing the loud and soft and loud and soft regions that happen when an interference pattern is set up, they would have felt there were these massive objects arranged in a ring. It would have been this completely baffling experience, and anything that was mysterious like that in the past was considered to be magic and supernatural.