Megalithic Site

This discovery marks the first time that such accurate dates have been assigned to any part of the complex, which could be the oldest site of its kind in Europe.

In the French region of Brittany, at the new site of Le Plasker in Plouharnel on Bay of Morbihan, radiocarbon dating of firepits suggests that the site’s megaliths were constructed from 4600 to 4300 B.C, making the bay Europe’s earliest megalithic region.https://t.co/UdVngDJsLT pic.twitter.com/R7EnvxaEqj

— Archaeology Magazine (@archaeologymag) July 8, 2025

Carnac was originally excavated in the 19^th century, but the rarity of organic materials such as charcoal – used for carbon dating – further hampered efforts to establish chronology.