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Heritage classified

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Origin and history

The archaeological site of Mont-Saint-Germain, located in Châtel-Saint-Germain en Moselle, is a barred spur overlooking the Moselle Valley at 306 metres above sea level. Occupied as early as Middle Neolithic II (4th millennium BC), it was a strategic place of continuous monitoring and habitation, with remains attesting to an uninterrupted human presence until the 16th century. Excavations conducted between 1967 and 1991 revealed flint tools, iron-age house foundations, and a Gallic rampart ("Gaulian wall") protecting the invasion site.

In the Gallo-Roman era, the mountain served as a refuge against the invasions of the Alamans and the Franks, as evidenced by fragments of tiles, torchis and coins. From the end of the sixth century, a Merovingian necropolis developed, with 370 burials including sarcophagi carved in stone. A Christian chapel, now extinct, was probably built there, as suggested by crosses and a belt buckle engraved with the names Peter and Paul. The site also became a place of worship with a priory and a castle built by the bishops of Metz between 1190 and 1220.

The castle, destroyed in 1235 after the War of Friends between the Bishop of Metz and the Messins, marked the end of the military occupation of the site. In the 12th century, the priory of Saint Vincent and the castle coexisted with artisanal structures (lime ovens, metallurgical workshops). The priory declined from the 15th century before being abandoned in 1584 and finally abolished in 1760. The archaeological remains, partially classified as Historical Monument in 1993 and 2003, offer an exceptional testimony of successive occupations, from the first Neolithic communities to the Mediomatrics and Merovingians.

Mont Saint-Germain also played a role in modern conflicts: a German fortified group (Feste Kaiserin) was built there in 1899 and used in the two world wars. During the Second World War, a Soviet prison camp (Ostarbeiter) was set up in the woods of the Reposoir in 1942. Released in 1944, the site retains traces of these occupations, adding a recent historical dimension to its millennium heritage.

Today, the site is accessible via marked trails to discover the ruins of the priory, the ditches of the barred eperon, and elements such as the lime oven or the chapel Notre-Dame du Gros Chêne. It illustrates the evolution of fortification techniques, funeral practices and daily life in Lorraine, from Neolithic to contemporary times.

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