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Stefans photography: Zeche Zollverein
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Stefans photography: Gerüsttunnel
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Stefans photography: Leiter ins Blaue - Ladder in to the blue
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Stefans photography: Rohe und Schornstein
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Stefans photography: Rohr
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Stefans photography: Jaeger Abdeckung
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Stefans photography: Weltkulturerbe Zeche Zollverein bei Nacht
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Stefans photography: Zeche Zollverein @night
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Stefans photography: Zeche Zollverein @night