©
michael-otto-foto: Zeche Zollern Lohnhalle, pay hall
©
michael-otto-foto: Zollern colliery Zeche Zollern
©
michael-otto-foto: machines hall Maschinenhalle
©
michael-otto-foto: Zeche Zollern in Dortmund
©
michael-otto-foto: Zeche Zollern in Dortmund
©
michael-otto-foto: Zeche Zollern in Dortmund
©
michael-otto-foto: Zeche Zollern in Dortmund
©
michael-otto-foto: Zeche Zollern in Dortmund
©
michael-otto-foto: Zeche Zollern in Dortmund
©
michael-otto-foto: Machine hall entrance area Maschinenhalle-Eingangsbereich
©
michael-otto-foto: Zeche Zollern
©
michael-otto-foto: Machine hall
©
michael-otto-foto: the door to where?
©
michael-otto-foto: side entrance
©
michael-otto-foto: on the other side
©
michael-otto-foto: have a seat
©
michael-otto-foto: come in
©
michael-otto-foto: machines hall