Tres Zapotes

Listen first. Cattle low somewhere beyond the fence. Insects buzz in the tall grass. The air is warm and wet, and it smells of earth and cut green stems. Under your feet the ground is soft and level. Around you rise low, grass-covered mounds. They look like ordinary hills, but people built them by hand, basket by basket, more than two thousand years ago.

This is Tres Zapotes, in the southern part of the Mexican state of Veracruz, in the municipality of Santiago Tuxtla. The name is Spanish and means 'three sapote trees', after a sweet tropical fruit that grows in this region. The ancient name of the place is lost. What remains is one of the longest-lived settlements of the Olmec world. The Olmec are often called the first great civilisation of Mesoamerica, the cultural region that later produced the Maya and the Aztecs.

To the north you can often see the Tuxtla Mountains. This is a volcanic range, green and steep, and it shaped everything here. The volcanoes gave the people rich soil for farming. They also gave them basalt, a dark, heavy volcanic stone. The Olmec carved that basalt into some of the most remarkable sculptures of the ancient Americas. Look at those hills for a moment. Much of the stone in the nearby museums came from that direction.

The story of modern Tres Zapotes begins with a surprise. In 1862, workers on a local sugar-cane estate were clearing land. They struck what they thought was the bottom of a giant upturned iron pot. When they dug further, they found a huge human face carved in stone. It was the first Olmec colossal head ever recorded by outsiders. A Mexican scholar named José María Melgar y Serrano described it a few years later.

Melgar's interpretation was mistaken, and it is worth knowing why. He looked at the broad nose and full lips and claimed the face looked African. He believed it proved that Africans had reached Mexico in ancient times. Scholars today reject this idea completely. The heads show local people, almost certainly rulers. Their features match the faces of people who still live in this region. The heads are portraits of the Gulf Coast, carved by the Gulf Coast.

The colossal heads are some of the most famous objects in Mexican archaeology. Each one shows a man wearing a close-fitting helmet or headdress. The faces are calm, with heavy eyelids and a serious mouth. Archaeologists think each head represents a particular ruler, and the different headdress designs may have marked individual identities. Moving these blocks of stone across swampy lowlands, without wheels or draught animals, was an enormous organised effort. That fact alone tells you this society had power and planning.

Now for the second great discovery. In the late 1930s, the American archaeologist Matthew Stirling came here on expeditions supported by the National Geographic Society. In 1939 his team uncovered a broken stone monument that became known as Stela C. A stela is a carved upright stone slab. On its back was a column of bars and dots. Stirling recognised them as numbers in the Long Count, the calendar system later used by the Maya.

The date on Stela C corresponds to a year in the first century before Christ, usually given as 32 BCE. At the time, this was older than any known Maya date. It caused a serious argument among scholars. Some refused to believe that people outside the Maya region had used the calendar so early. The broken stone was incomplete, and part of the date had to be reconstructed. Critics said Stirling had guessed the missing number.

Here is the twist. Decades later, in 1969, a local farmer found the missing upper part of the stela. The number on it matched Stirling's reconstruction. The early date stood. Today the two halves of Stela C are kept in different places. One part is in the small museum here at Tres Zapotes, and the other is in the National Museum of Anthropology in Mexico City. A single stone now connects a rural village and the capital.

Why does Tres Zapotes matter so much? Most famous Olmec centres, such as San Lorenzo and La Venta, declined and were abandoned. Tres Zapotes did not disappear. People lived here across many centuries, long after those other centres faded. Archaeologists call the later phase 'Epi-Olmec', meaning 'after the Olmec'. In this period, people here developed an early system of writing and calendar dates. This place forms a bridge between the first Olmec cities and the later civilisations of Mesoamerica.

The mounds around you are mostly earth, not cut stone. This surprises many visitors who expect pyramids like those in central Mexico. On the Gulf Coast, good building stone was scarce, so people built with packed earth and clay. Over centuries, rain softened the shapes. Grass and trees grew over them. Archaeologists study the layout of these mounds to understand how the town was organised, with groups of platforms and open plazas.

The village of Tres Zapotes lives right beside the ancient site. Children walk past the museum on their way home. Farmers work fields that were farmed in Olmec times too. The site museum is small and simple, and that gives it an honest feel. You can stand very close to the carvings and see the tool marks and the grain of the basalt. Take your time with each piece. The stones are heavy, but the details are fine.

As you leave, look back at the low green mounds once more. They do not ask for attention. A cow may be grazing on one of them. Yet here, in this quiet farmland, people recorded time in stone and carved the faces of their leaders. Listen again to the insects and the wind in the grass. These are the same sounds the people of Tres Zapotes heard, long before anyone gave this place its modern name.