archive.org/web/20161009213257/http://www.panoramio.com/user/1631711?with_photo_id=9494988 operator: Panoramio described at URL: https://web.archive...
archive.org/web/20161013064220/http://www.panoramio.com/user/1631711?with_photo_id=9495072 operator: Panoramio described at URL: https://web.archive...
mouth) at Zeche Nachtigall, Dünkelberg quarry in Witten (Germany) German Eingang des Nachtigallstollens im Steinbruch Dünkelberg (Muttental), Witten object...
_Zeche_Nachtigall_-_panoramio.jpg){kind=link}