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This article is from Hakai Magazine, an online publication about science and society in coastal ecosystems. Read more stories like this at hakaimagazine.com.
In the ancient Mediterranean, Corinth was an economic powerhouse. Built on a narrow isthmus—a natural choke point between north and south—the city controlled trade between northern Greece and the Peloponnese Peninsula. Bound on either side by naturally protected bays, Corinth was also a convenient bridge between the Aegean and Ionian Seas.
The city’s main harbor, located along the Gulf of Corinth, was the largest port in ancient Greece. In previous work, archaeologists examining gravesites and historical documents revealed that merchants sailed from the port, known as Lechaion, more than 2,600 years ago, in the seventh century B.C.E. They did so in ships likely loaded with pottery, perfume, food and fabrics to trade across the region.
But a recent discovery—five lumps of brown coal and a helping of ancient lead pollution—has pushed the history of this pivotal port back by at least 500 years, making it one of the earliest active ports in Europe. The revised history stems from an international research effort that’s been surveying the ancient harbor since 2013.
Using hand augers and mechanical drills, French geoarchaeologist Antoine Chabrol of Sorbonne University in France and his colleagues carefully collected cylinders of sediment from the inner harbor, where boats would have pulled upriver to anchor. Analyzing the mud cores, they found a sudden spike in lead levels less than ten feet deep. The shift is so sharp and sustained that it could only have been caused by human activity on the riverbanks, says Chabrol.
Lead pollution comes from smelting, mining and metalwork, and the scientists dated the pollution in the port to as early as 1381 B.C.E.—3,405 years ago—during the Bronze Age.
The five chunks of brown coal, each no bigger than a matchbox, add further evidence of the port’s antiquity. These fragments are a specific kind of coal called lignite, and the pieces collected from the harbor’s sediment date to as early as 1122 B.C.E. The nearest known source of lignite is more than 30 miles away, suggesting merchants were importing the fossil fuel nuggets to stoke their harborside furnaces by the 12th century B.C.E.
Bronze Age ships might have paddled from port carrying urns of olive oil, bulk bins of fruit and narrow-necked jars of wine to Crete, Cyprus and beyond. But so far, while the team has found convincing evidence of Bronze Age activity in Corinth’s port, they’ve yet to find pieces of the actual port from this era. The physical evidence found at the site so far—including stone piers, wooden pillars and a possible lighthouse—dates to the first century C.E. or later, during the Roman period.
But even without physical Bronze Age structures, the findings show that Corinth’s port was used consistently for nearly 2,600 years. From the 13th century B.C.E. to the 13th century C.E., Mycenaean, Phoenician, Roman and Byzantine ships would have sailed from this strategic location.
“You can detect their presence in one single site,” says Panagiotis Athanasopoulos, an archaeologist at Greece’s Danish Institute at Athens and a collaborator on the project. “It’s like the very essence of historical continuity.”
Incredibly, though, even this revised age might be an underestimate. Archaeologists have previously found evidence of people traveling through Corinth more than 8,000 years ago, as well as pots from a late Stone Age culture that lived to the northwest, along the Adriatic Sea. Bjørn Lovén, co-director of the Lechaion Harbor Project and co-author of the new paper, says this suggests Corinth’s maritime trade network may extend even deeper into history.
Nafsika Andriopoulou, a geoarchaeologist at the Foundation for Research and Technology-Hellas’ Institute for Mediterranean Studies in Greece who was not involved in the study, says a broader analysis of what metals might be in the soil could help fill in even more details. For example, tracking other metals—such as copper, the main component of bronze—could tell geoarchaeologists even more about the port’s early uses. Similar sampling in nearby locations could even help reveal ancient trading routes, Andriopoulou adds.
The team will continue their work during the summer of 2024, looking for more clues of ancient commerce and bringing renewed activity to this long-bustling port.
This article is from Hakai Magazine, an online publication about science and society in coastal ecosystems. Read more stories like this at hakaimagazine.com.
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