HistoryPre-ColumbianVeracruz, Mexicolow confidence

Excavations at the Campo Viejo site in eastern Mexico uncovered a circular stone platform made from circular stones and decorated with squared lines or figures.

Notes on verification

Multiple independent outlets (AFP-sourced, Smithsonian, Mexico News Daily, Ancient Origins, La Brújula Verde) corroborate the discovery of a decorated circular stone platform at Campo Viejo, Veracruz. Minor nuance: circular stones appear to be an embedded decorative element on the platform's sides rather than its primary construction material, but this doesn't contradict the claim's substance.

Sources