The Hönne () is a left tributary river to the Ruhr, flowing through the northern Sauerland hills in North Rhine-Westphalia, Germany. The spring of the Hönne is located in the west of Neuenrade at 437m above sea level. After 33 km the river ends near the town of Fröndenberg. The total catchment area of the river is 262 km2.
via Wikipedia infobox
The Hönne () is a left tributary river to the Ruhr, flowing through the northern Sauerland hills in North Rhine-Westphalia, Germany. The spring of the Hönne is located in the west of Neuenrade at 437m above sea level. After 33 km the river ends near the town of Fröndenberg. The total catchment area of the river is 262 km2.
Most notable is the narrow valley between Balve and Menden, where the Hönne has carved 60m deep into Devonian limestone. Several caves are located in the valley, of which the Balver Höhle and the Reckenhöhle are accessible for visitors. When the water level in the river is low, some parts of the valley fall dry as the water flows subterraneously through the Karst rocks. Several of the tributary brooks in that valley also flow subterraneously for some parts of their course.
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