archive.org/web/20161020044640/http://www.panoramio.com/user/4619321?with_photo_id=50143273 operator: Panoramio described at URL: https://web.archive...
archive.org/web/20161018023120/http://www.panoramio.com/user/4619321?with_photo_id=40153483 operator: Panoramio described at URL: https://web.archive...
Muttental, Witten (Germany) German Steinbruch Dünkelberg an der Zeche Nachtigall, Muttental, Witten Esperanto ŝtonminejo Steinbruch Muttental en Witten, Germanio;...
Nachtigall, Dünkelberg quarry in Witten (Germany) German Eingang des Nachtigallstollens im Steinbruch Dünkelberg (Muttental), Witten object of statement has role:...
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archive.org/web/20161029012303/http://www.panoramio.com/user/3298094?with_photo_id=91921524 operator: Panoramio described at URL: https://web.archive...
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