Some of its bluestones have acoustic properties
Perhaps they were used as a prehistoric form of bells? Read the rest of the story with a link @ Stonehenge Holds a 'Sonic Secret' - Some of its bluestones have acoustic properties
[Perhaps a way of signaling it's alien builders?]
Perhaps they were used as a prehistoric form of bells? Read the rest of the story with a link @ Stonehenge Holds a 'Sonic Secret' - Some of its bluestones have acoustic properties
[Perhaps a way of signaling it's alien builders?]
