Someone went to a lot of trouble to put up this monument while concealing their identity.   https://en.wikipedia.org/wiki/Georgia_Guidestones  The inscription is a radical malthusian prescription for sustainability, seemingly written for some post-apocalyptic survivors.  For years it been out in the middle of a georgia field with no explanation except for what’s written on it.  And now something has been added to it.  This photo shows the monument before the addition.  Note the notch cut out of the stone inside the circle.