Ancient Builders Created Monumental Structures that Altered Sound and Mind, Say Researchers | Popular Archaeology – exploring the past By Seismic Awakening November 6, 2015 Some ancient monumental structures were built to manipulate sound for sensory and mind effects, suggests recent research. Source: Ancient Builders Created Monumental Structures that Altered Sound and Mind, Say Researchers | Popular Archaeology – exploring the past Share this:TwitterFacebookLike this:Like Loading... Related