I know the Ruhr region being active from many trips to visit my grandparents in my childhood. Chimneys were smoking all over the way on the left or right of the highway. Last year the last active coal mine was closed. So I definately had to explore an old mine. Unfortunately I decided for the wrong one - it already has been demolished. Being disappointed from the first stop I decided to visit a not that spectacular mine that was around and surely open. Sadly this one was destroyed by vandalism but still representative.
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