French researchers have identified a major ceremonial site in the Auvergne region featuring a series of massive oak-block altars decorated with intricate silver leaf. Dated to the 2nd century BCE, the silver patterns depict stylized wheat stalks and solar wheels, pointing to the site's function as a hub for late-summer harvest gatherings among the Arverni tribe.
The excavation revealed that these altars were used during multi-day assemblies involving athletic competitions and grain blessings, providing a physical link to the ancient roots of the Lughnasadh festival. Soil analysis near the altars found high concentrations of charred spelt and barley, indicating that communal feast preparations were a central component of these early Gallic rituals.