After doing some research the sites could have been used for "Shelter during the Rainy Season, or in other words. They were aware of the Universal Cycles, aka Flooding, Tornados etc, the Graphite could Absorb or Transfer Frequencies from Geomagnetic Storms and the Accoustics could be Utilised with Harmonics! It would be nice to know if they connect up some how, Orientation, Direction, Relation to Planets Stars etc
Something is not right. This message is just to keep things from messing up down the road