Olmec heartland Olmec heartland The Olmec heartland is the southern portion of Mexico's Gulf Coast region between the Tuxtla mountains and the Olmec archaeological site of La Venta, extending roughly 80 km (50 mi) inland from the Gulf of Mexico coastline at its deepest. It is today, as it was during the height of the Olmec civilization, a tropical lowland forest environment, crossed by meandering rivers. Most researchers consider the Olmec heartland to be the home of the Olmec culture which became widespread over Mesoamerica from 1400 BCE until roughly 400 BCE. The area is also referred to as Olman or the
Olmec colossal heads were presumably widely available to the population. Together with these, of particular relevance to the colossal heads are the "Olmec-style masks" in stone, so called because none have yet been excavated in circumstances that allow the proper archaeological identification of an Olmec context. These evocative stone face masks present both similarities and differences to the colossal heads. Two thirds of Olmec monumental sculpture represents the human form, and the colossal heads fall within this major theme of Olmec art. The colossal heads cannot be precisely dated. However, the San Lorenzo heads were buried by 900 BC, indicating that their period