A recent survey of a Neolithic passage grave in Brittany, France, has revealed previously hidden engravings of celestial patterns on a massive granite capstone. The markings, which appear to map the position of the Pleiades star cluster, align perfectly with the rising sun during the spring equinox. Experts suggest this site served as a focal point for prehistoric communities to gather for 'Star-Tracking' festivals that celebrated the arrival of the planting season.
The presence of scorched earth and fragmented pottery at the entrance of the cairn indicates that large-scale communal fires were lit as part of the celebration. This new evidence pushes back the origins of Atlantic European spring festivals by nearly 500 years, highlighting the advanced astronomical knowledge of Neolithic societies. Researchers are now investigating similar sites in the region to see if they formed a wider network of ceremonial star-watching stations.