Gallery, whose mouth hole is still preserved today as a technical monument
The Romans were already mining in the Emsbach Valley and in the Middle Ages, the Archbishops of Trier used silver to supplement their coffers. With industrialisation in the 18th and 19th centuries, metals were in particularly high demand. Things did not always go smoothly between mining and bathing: water was shovelled, clouds of smoke arose and a slow conflict arose between the very opposing industries. Clearly visible in the town area are the 750 metre long town tunnel, begun in 1869, the main drainage of the mine with the thermal water inlets and the "Gute Hoffnung" mine, begun in 1858, which was the main mine for lead and ems with 15 brines underground (deepest shaft around 900 metres).