Emilianus-Stollen
Wallerfangen, Germany
The Emilianstollen is part of a Roman copper mine on the escarpment of the Saargau in the St. Barbara district of Wallerfangen in Saarland, Germany. The entrance is about 150 metres (490 ft) from the main road. The ancient tunnel with its carved stone inscription is the only direct evidence of underground mining in Central Europe from Roman times. However, it is not the oldest underground mine in Central Europe. In the 5th millennium BC There was already underground mining of flint and copper ores. Guided tours of the mine are available.
Mine data from Wikidata (CC0). Summary from Wikipedia (CC BY-SA).