On this tour you will get in touch with the black gold of the Ruhr area, with the coal. It still had a long way to go after it was brought out of the depths of the mines. In the coking plant, it was processed into coke at high temperatures and then burned in the blast furnaces of steel production. This way of coal has left its mark, which you can still discover today. On the approximately 40 kilometers of this tour you go on an expedition.The journey begins in Dortmund at the Zeche Zollern, one of the most beautiful industrial plants from the coal age in the pot. Hard to imagine that the castle-like complex in the 1960s was almost demolished. Instead, it marks the beginning of industrial monument preservation in Germany today and houses a permanent exhibition that tells the story of the mine and the people who worked here. So, before it really starts, it's worth taking some time to visit the complex.Then you start cycling. Mostly over old railway lines you are on the way. In the past, freight trains rattled here full of coal through the Ruhr area, today the former railway tracks are wonderful cycle paths that you can fully enjoy. Along the Emscher you will roam Dortmund and if you still have time and power, here is worth a short trip to Phoenix West, where you can experience an old blast furnace plant on a "Skywalk" up close. In addition, the Bergmann brewery with beer garden invites you to a culinary break.With the coking plant Hansa you reach then another highlight on the route. Coke was still produced here until 1992 - today an adventure trail tells of this time. From the coal tower you have a wonderful panorama over the complex. Before you reach the starting point of the tour, you can enjoy the idyllic nature reserve Dellwiger Bach on the last few kilometers.There are parking spaces at Zollern colliery, so you can arrive relaxed by car. Even easier is it by regional train: The line RB42 drives you from the Dortmund central station to the station Dortmund Bövinghausen - from here it is a stone's throw to the colliery. But the most beautiful is undoubtedly the journey by bike: on the bike paths R10 and R31 as well as on the Emscher Park cycle path, there are many beautiful routes here, which make the journey to the start of the tour to a wonderful experience.