Stock Photo: D-Dortmund, Ruhr area, Westphalia, North Rhine-Westphalia, NRW, D-Dortmund-Eving, former colliery Minister Stein, hard coal mine, hammerhead pit tower

Stock Photo: 1566-1014027 D-Dortmund, Ruhr area, Westphalia, North Rhine-Westphalia, NRW, D-Dortmund-Eving, former colliery Minister Stein, hard coal mine, hammerhead pit tower