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Origin and history

The ancient camp of Cora, also called camp of Cora-Villaucerre, is a strategic site located near Saint-Moré in Yonne, Burgundy-Franche-Comté. Occupied from the Neolithic (IVth millennium BC), it became a fortified habitat at the Bronze Age (950–800 BC) and then during the Hallstatt (500 BC). After a period of abandonment, the Romans integrated it into their defensive network along the Via Agrippa de l'Océan, transforming it into a closed camp to control the region after the conquest of Gaul.

The Note of the Dignitys of the Empire (early 5th century) mentions a detachment of Sarmatians charged with its defence around 400 AD. The site, described by Ammien Marcellin (IVth century) as a military stage ("per Sidolocum and Coram"), would have welcomed the usurper Sylvain and Emperor Julien in 356. Destroyed during the French invasions (Vth century), its remains served as refuge during the Sarrasin raids (732) and Norman raids (873). Its Latin name Cora refers to the Cure River, spelled Chora on 19th century maps.

The debate over the dating of its fortifications contrasted historians: Victor Petit (XIXth century) attributed them to the 8th–IXth centuries, linking their construction to a Norman occupation after 873. Maurice Prou and Adrien Blanchet supported a Merovingian origin (inspired by Roman models), while Maximilien Quantin in turn evoked a sarmate base of the Lower Empire (1854) and then medieval fortifications (1864). Arcisse de Caumont points out that the cement used, typical of the Ve–XI centuries, does not allow precise dating.

The camp, of oval shape (600 x 400 m, 20–25 ha), operates a natural rocky spur at 236 m above sea level, barred by a 200 m wall with seven half towers. A 15 m wide and 2 m deep ditch, dug into the rock, strengthens the defences on the northwest side, the only vulnerable access. The excavations (1851–52) revealed prehistoric artifacts (silex, Hallstatt pottery), Roman weapons (arrow irons, javelots), and Gaulish coins (Lingons, Eduans) or Merovingian coins (VIII century).

Ranked a Historic Monument in 1971 for its wall, the site illustrates the superposition of occupations: Neolithic, Bronze Age, Gallo-Roman period, and medieval reuse. Numismatic discoveries (Trajan, Hadrian, Marc-Aurèle) confirm its role in regional exchanges. Father Parat notes similarities with the Nermont Cave (2 km south), rich in Hallstatt remains, suggesting cultural continuity between the ages of metals and antiquity.

Today, the Cora camp offers a rare testimony of Roman defensive strategies and their legacy in the Middle Ages. Its gradual abandonment after the ninth century coincided with the political stabilization of Burgundy, but its history reflected the upheavals linked to the barbaric migrations and the Christianization of Gaul. The 19th century excavations, though partial, documented its evolution, from the first Neolithic pastors to the Sarmatian warriors of the Lower Empire.

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