articles say some report hearing Booms. 4am time area..
https://www.wyff4.com/article/georgia-guidestones-possible-explosion/40525569
However, some people who live a little closer said they heard and felt an explosion at about 4 a.m.
georgia guidestones
Viewer
The viewer who took the pictures above said she lives about 5 miles away and heard a bang at 4 a.m. She said she went back to bed and when she woke up, she saw a Facebook post about an incident at the guidestones and drove by.