1 janv. 75000 av. J.-C. - Adam's Calendar
Description:
some theories:
rock formation as a calendaring system
estimated to be 75000 years old
https://en.wikipedia.org/wiki/Blaauboschkraal_stone_ruins
http://realhistoryww.com/world_history/ancient/Misc/Adams_Calendar/Adams_Calendar.htm
Ajouté au bande de temps:
Date:
1 janv. 75000 av. J.-C.
Maintenaint
~ Il y a 77075 ans