Located on a farm at the highest point of Elbert County, the Georgia Guidestones are granite slabs engraved with ten principles for “an age of reason.”
Click here for more information, including the other nine principles, and a handful of entertaining conspiracy theories.
Pedagogy of the Plants 
I’ve been to GA a million times but never have I seen these before but am now adding it to my list. Thanks for the suggestion.
Pretty mysterious. I’ve lived in North Georgia since ’95, and just heard about them this year.
Reflected sunlight leaves granite so many surprising shades of grey.