The stone head sculptures of the Olmec civilization of the Gulf Coast of Mexico (1200 BCE - 400 BCE) are amongst the most mysterious and debated artefacts from the ancient world. The most agreed upon theory is that, because of their unique physical features and the difficulty and cost involved in their creation, they represent Olmec rulers.
This is a companion discussion topic for the original content at https://www.worldhistory.org/article/672/olmec-colossal-stone-heads/.