History of the Ruhr History of the Ruhr The actual boundaries of the Ruhr vary slightly depending on the source, but a good working definition is to define the Lippe and Ruhr as its northern and southern boundaries respectively, the Rhine as its western boundary, and the town of Hamm as the eastern limit. In the Middle Ages, local power was vested primarily in the counts ("Grafen") of Berg, Mark and Cleves. The left bank of the Rhine was held by the Archbishop of Cologne. The Hellweg was an important trade route crossing the region from Duisburg to Dortmund and beyond as far as
Ennepe-Ruhr-Kreis previously independent city of Witten in 1975. In the middle of the coat of arms there is the checked red-white bar of the County of Mark, which owned the area in medieval times. The two wavy lines above and below depict the two rivers which gave the district its name, the Ruhr and the Ennepe. Ennepe-Ruhr-Kreis The Ennepe-Ruhr-Kreis is a district in the center of North Rhine-Westphalia, Germany. It is part of the southern Ruhr urban area and has ca. 324,000 inhabitants (2012). The district's seat (capital city) is Schwelm; the largest of its nine towns is Witten. The name