showing a person identified as "Harvester Mountain Lord", 156 CE The rise of the Epi-Olmec culture on the western edge of the
Olmec heartland coincides with the depopulation of the eastern half of the Olmec heartland and the decline of the Olmec culture in general. The Epi-Olmec culture represented a gradual transformation of, rather than a sharp break with, the Olmec culture. Many Olmec
motifs, for example, were employed by its successor culture.
Tres Zapotes, one of the largest Olmec sites, continued as a regional center under the Epi-Olmec culture. And daily life for the non-elites continued much the same: subsistence farming with opportunistic hunting and fishing,
wattle-and-daub houses, thatched roofs, and bell-shaped storage pits. On the other hand, the
Late Formative period saw a widespread decline in trade and other interregional interaction throughout
Mesoamerica, along with a marked decline in the use of exotic prestige items, such as
greenstone beads. It has been proposed these exotic trade goods were replaced as prestige items by locally created luxury goods, such as cotton cloth and towering headdresses. The decline in interregional interaction and trade was not uniform however: in particular, interaction with cultures across the
Isthmus of Tehuantepec increased, and an increase in the import of obsidian has also been detected. In contrast to earlier Olmec art, Epi-Olmec art displays a general loss of detail and quality. Ceramic figurines were less realistically detailed, and the basalt monuments and
stelae at Tres Zapotes lacked the artisanship, refinement, and detail of the earlier San Lorenzo and La Venta work. Based on the decentralized placement of mounds groups and monumental sculpture at Tres Zapotes, the Epi-Olmec hierarchy is assumed to have been less centralized than its Olmec predecessor, perhaps featuring a factionalized ruling assembly rather than a single ruler. (
See also Tres Zapotes site layout and societal organization) ==Epi-Olmec sculpture==