Was Stonehenege Built For the Sound Effects?

The widely accepted theory is that the arrangement of pillars at Stonehenge is related to the positioning of the Sun at the equinoxes. But now a US researcher has come up with an intriguing new theory, claiming that the ancient stones were actually arranged to create a special sound effect.

The ordering of stones at the rock monument in Wiltshire, the scientists suggests, could be an attempt to recreate a sound illusion known as an "interference pattern" during prehistoric pipe-playing rituals. People taking part in a ritual dance around a pair of pipers would have heard the music unexpectedly grow quieter as they moved past certain spots due to this natural phenomenon, creating the illusion that the sound was intermittently being muffled by invisible obstacles as the dancers circled the pipers.