Aar (Dill)

The Aar is a 20.6-kilometre left-bank tributary of the Dill river in the Lahn-Dill-Kreis, formed by the confluence of the Ahrbach and Erdaer Bach streams north of Erda and joining the Dill at Herborn-Burg. Its quiet valley offers gentle riverside paths suited to walking and cycling away from main roads.