Roman Empire's second-largest olive oil factory discovered in Tunisia

Five gallons of olive oil per person per year. That was the Roman appetite for it—not just for cooking, but for lamps, medicine, skin care, and religious ceremonies. Olive oil wasn't a luxury; it was infrastructure.

Archaeologists have now uncovered why Rome could sustain that demand. In western Tunisia, near the Algerian border, they've found two massive olive-pressing facilities that operated between the third and sixth centuries. One of them appears to be the second-largest olive oil production center the Roman Empire ever built.

The site is called Henchir el Begar, sprawling across 82 acres in Tunisia's Kasserine region. Since 2023, teams from Italy, Spain, and Tunisia have been excavating it together—a collaboration that's already paying off. What they've found tells the story of an entire agricultural economy built around one crop.

The larger facility, dubbed Hr Begar 1, contains 12 beam presses—wooden machines that squeezed olives until they surrendered their oil. The smaller site, Hr Begar 2, has eight. Both have water-collection basins and cisterns, the infrastructure needed to process oil at industrial scale. The region itself was ideal for olives: dry, with sharp temperature swings, nestled in the Jebel Semmama mountains. Tunisia was Rome's primary olive oil supplier, and Henchir el Begar was one reason why.

But the site reveals something deeper than just production numbers. Archaeologists found a Latin inscription from 138 C.E. authorizing a bimonthly market here—a gathering place for trade. They've identified residential roads, millstones for grain, and a network of structures suggesting this was a thriving rural estate, not just a factory. The artifacts recovered span centuries: a copper-and-brass bracelet, limestone projectiles, fragments of sculpture. This was a lived-in place.

What makes this discovery significant is how it illuminates the machinery of Roman life. Olive oil wasn't a commodity shipped from some distant province—it was woven into the daily fabric of an empire. It lit their homes, preserved their food, and enabled the Mediterranean diet to flourish. The technology was simple: wood, stone, water, pressure. But the scale was staggering.

Luigi Sperti, an archaeologist at Ca' Foscari University of Venice, notes that the site offers "an unprecedented insight into the agricultural and socioeconomic organization of the frontier regions of Roman Africa." As excavations continue, more details about trade routes, labor organization, and supply chains will likely emerge—a clearer picture of how empires actually fed themselves.