Bergwerk Käpfnach is the lignite mine and museum.
According to PR-model, bergwerk-kaepfnach.ch is ranked 3,631,873rd in multilingual Wikipedia, in particular this website is ranked 595,843rd in German Wikipedia.
The website is placed before quarzsand-bergwerk.ch and after vallistriensis.org in the BestRef global ranking of the most important sources of Wikipedia.