(Kemlas, Berg, Frankenwald, Franken, Bayern, Deutschland)
Ancient lead and iron mines, worked intermittently from the early 15th century until the first world war.
Ref.: F. Müller: "Bayerns steinreiche Ecke", 2nd ed., Oberfränkische Verlagsanstalt und Druckerei GmbH (Hof), 1984