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 religion unlike the Mayan "Popol Vuh", or the Aztecs, with their many codices and conquistador accounts. Archaeologists, therefore, have had to rely on other techniques to reconstruct Olmec beliefs, most prominently: The latter two techniques assume that there is a continuity extending from Olmec times through later Mesoamerican cultures to the present day. This assumption is called the Continuity Hypothesis. Using these techniques, researchers have discerned several separate deities or supernaturals embodying the characteristics of various animals. Olmec religious activities were performed by a combination of rulers, full-time priests, and shamans. The rulers seem to have been the most important religious