Dortmund Rombergpark - Roter Bach 01
In the eastern area of the park, spring on a hillside containing iron sources. The entering here to light water contains a high proportion of dissolved iron lawn stone. The water has a temperature of about 9 degrees, indicating a shallow source. In the western area of the park is a source. With this, also contains iron, it is but to outcropping of the coal mine pit water "Zeche Glückaufsegen". Both sources feed the Olpkebach, in the area of the park.