San Lorenzo Tenochtitlán lies in the lower Coatzacoalcos basin of Veracruz, in a landscape of navigable waterways and broad floodplains. The name can be confused with the Aztec capital Tenochtitlan, but this is an Olmec archaeological zone near the modern community of San Lorenzo in Texistepec municipality. Its position mattered: rivers and land routes connected the settlement to surrounding areas, while water and fertile ground supported life in a lowland environment.
INAH records the earliest occupation in the Ojochi and Bajío phases, roughly 1500–1200 BCE. Between about 1200 and 850 BCE, population and productive activity increased. Rather than simply building on a natural rise, residents reshaped the terrain with enormous quantities of sediment, creating terraces and a broad, level platform for houses and public architecture. An INAH journal article cites earlier estimates of six to eight million cubic metres of fill. The scale makes the site’s built landscape one of its central stories.