Related Clues:
- German industrial valley
- Essen's region
- Remscheid's region
- ___ Basin, German coal region
- River to the Moselle
- Where Wuppertal is
- See 70-Across
- European coal area
- German valley
- Its principal city is Essen
- Western Germany's river to the Rhine
- German/French river
- River of Germany
- Duisburg's locale
- German industrial center