The Alps unearth huge Roman walls — a first in 100 years

A protective tent now envelops the main area within Äbnetwald's hill near Cham-Oberwil, ensuring the delicate remnants are shielded from weather elements.

Skilled professionals are carefully revealing walls erected around 2000 years ago, spanning an impressive area of at least 500 square meters (m²), or just over 5300 square feet (ft²).

"We were also amazed that the top bricks were even visible above ground," said Christa Ebnöther, Professor of Archeology of the Roman Provinces at the University of Bern.

"There are only a few relics of this magnitude from the Roman period in the pre-Alpine region, setting it apart from other areas. The relatively well-preserved state of these remains is also remarkable."

The extent of Roman building walls is yet to be fully explored, along with their specific purpose. Whether it served as a villa with a scenic view or a temple complex, these questions will drive future investigations.

Beyond the walls, archaeologists stumbled upon commonplace artifacts and distinctive items from the Roman era, including fragments of imported Roman tableware known as terra sigillata and meticulously crafted glass vessels. This evidence suggests that some elite people lived at the site.

Fragments of amphorae — ancient jugs with a characteristic pointed bottom — reveal extensive cross-regional trade during Roman times, transporting commodities like wine, olive oil, and fish sauce from the Mediterranean to Äbnetwald near Cham.

A strategic location

Numerous iron nails suggest a wooden structure atop the foundational walls. Another exceptional discovery includes a gold fragment, likely part of a once beautiful ornament.

The Romans' choice of the elevated position near Äbnetwald for their constructions demonstrates their strategic sense. The panoramic view offered a commanding perspective of the surroundings, crucial for sustenance and water sources. 

The history of human habitation on the gravel hill near Oberwil, predating the Roman era by millennia, attests to the region's appeal. 

Recent decades have revealed critical archaeological finds in the vicinity, such as remnants of a Middle Bronze Age settlement, late Bronze Age graves, and Celtic-era coins.

"These pieces of the puzzle reveal our ancestors' lives and enrich our understanding of history," highlighted Karin Artho, head of the Office for Monument Preservation and Archaeology.