The copper mine at Düppenweiler in the 18th century?

However, this could also have been the case in Düppenweiler, where a copper mine was (temporarily) operated from about 1725 until 1916. The underground facilities are unlikely to have differed from other mines operated at the same time.  However, it can only be conjectured whether everything that is now replicated in the surface facilities existed in Düppenweiler in the past. Some old documents suggest this conjecture.

Source:

Drawings: Heinrich Groff, Publisher: Editions Gallimard , Author Emmanuelle Brugerolles