A map of the better known Mexican sites from the Formative Period (Preclassic Era), with a very general date of 600 BC (BCE).  The yellow sites are known villages and towns.  The smaller red dots mark locations where artifacts or art has been found without evidence of habitation.

This is a companion map to Image:Olmec Heartland Overview v2.svg.
No machine-readable source provided. Own work assumed (based on copyright claims).
No machine-readable author provided. Madman2001 assumed (based on copyright claims).