Related Clues:

• Bern's river (Var.)
• Longest river entirely in Switzerland
• Rhine tributary
• German region
• Region bordering the Rhine
• It goes between a couple of Swiss banks
• Essen's valley
• River to the Rhein
• The Lake of Thun is a widening of its course
• River through Mülheim and Dortmund
• Essen valley
• Essen's basin
• River of Switzerland
• German wine region
• River that drains the Lake of Thun