A hole in the road seemed small, but revealed an underground passage from 500 to 100 BC with several chambers, tool marks on the walls, and even medieval pottery hidden beneath the roadway.

Written by Fabio Lucas Carvalho

Published on 15/04/2026 at 21:32

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A hole in the road between Plovan and Ty Broc’h, in Finistère, revealed a subterranean cavity dated from 500 to 100 BC, with interconnected chambers, tool marks on the walls, and even medieval pottery, opening a new front for archaeological excavation in Brittany

A hole in the road in Plovan, France, led to the discovery of a subterranean archaeological site attributed to the Gallic period. The case began on a small road between Plovan and Ty Broc’h, where municipal workers noticed that the ground was giving way and identified a much larger cavity beneath the surface.

From this finding, archaeologists were called in to assess the area and concluded that the site could hide an ancient structure. Since March 16, a team has been working on excavations to investigate what was covered by the ground.

The hole in the road revealed a subterranean passage

By enlarging the initial opening, archaeologists found a subterranean passage dated from 500 to 100 BC. The structure fits into a type of cavity already known in Brittany, where more than 400 similar examples have been identified.

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The structure has interconnected chambers

The site discovered after the hole in the road consists of several chambers connected by smaller spaces. For archaeologists, these environments may have been used by the Gauls to store food.

In one of the chambers, several vertical lines were identified on the walls. These marks may be traces left by the tools used in the excavation of the subterranean structure.

Ancient marks and medieval pottery

Muriel Fily stated that the tool marks found in this chamber were the element that moved her the most during the excavation. The detail reinforces the uniqueness of the site, even within a type of cavity already known in the region.

Another important discovery in the space revealed by the hole in the road was the presence of pottery dated from the Middle Ages. The assessment by the archaeologists indicates that the cavity was likely filled around the 10th or 11th centuries, long after its Gallic origin.

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A hole in the road seemed small, but revealed an underground passage from 500 to 100 BC with several chambers, tool marks on the walls, and even medieval pottery hidden beneath the roadway.

A hole in the road between Plovan and Ty Broc’h, in Finistère, revealed a subterranean cavity dated from 500 to 100 BC, with interconnected chambers, tool marks on the walls, and even medieval pottery, opening a new front for archaeological excavation in Brittany

The hole in the road revealed a subterranean passage

The structure has interconnected chambers

Ancient marks and medieval pottery

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A hole in the road seemed small, but revealed an underground passage from 500 to 100 BC with several chambers, tool marks on the walls, and even medieval pottery hidden beneath the roadway.

A hole in the road between Plovan and Ty Broc’h, in Finistère, revealed a subterranean cavity dated from 500 to 100 BC, with interconnected chambers, tool marks on the walls, and even medieval pottery, opening a new front for archaeological excavation in Brittany

The hole in the road revealed a subterranean passage

The structure has interconnected chambers

Ancient marks and medieval pottery

Seen from space, an image taken by an astronaut shows an unlikely oasis in the Saudi Arabian desert, protected by a terrain that slows the advance of sand, surrounded by green circles, remnants of an extinct lake and nearly 10,000 years of preserved history.

While the U.S. still faces limitations in deep space, China is developing unprecedented technology with strategic satellites that maintain communication with the far side of the Moon and aims for dominance by 2030.

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The Blood Falls of Antarctica hide a living ecosystem trapped under the ice for over 2 million years, where microbes survive without light, without oxygen, and without ever having seen the Sun.

Bavarian archaeologists unearthed a medieval skeleton that had an articulated iron hand in place of its left arm, and the discovery reveals that doctors were already creating sophisticated prosthetics over 500 years ago.

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